{"title":"Filters for the Perfect Fit","description":null,"products":[{"product_id":"master-clear-ma40","title":"Master Clear® MA40 Filter - 2\" FPT","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe MA40 is the current-generation companion filter for a wide range of MasterSpas hot tubs and swim spas. Built with a 2-inch female pipe thread connection, it works alongside the MA-R4 primary filter to provide complete filtration coverage for your spa. Unlike the MA-R4, the MA40 does not house an EcoPur® Charge Mineral Cartridge — it is a dedicated mechanical filtration filter.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThis is the current-generation replacement for the PMA40L filter.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eCompatible Models — Current Generation (2025+)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eTwilight Series:\u003c\/em\u003e TS 6.2, TS 67.25, TS 7.2, TS 7.25, TS 8.2, TS 8.25\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eMichael Phelps Legend Series:\u003c\/em\u003e MPL 30, MPL 700, MPL 800, MPL 850, MPL 900\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eH2X Swim Spas:\u003c\/em\u003e Therapool SE, Therapool D, Trainer 12, Trainer 15, Trainer 15D, Trainer 19D Max, Trainer 21D, Challenger 15D, Challenger 19D MAX, Challenger 21D\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eAlso Replaces the PMA40L on Older Models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eTwilight Series:\u003c\/em\u003e TS 6.1, TS 67.15, TS 8.3, TS 8.35, TS 87.3, TS FIT, TS MP\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eLiving Healthy Series:\u003c\/em\u003e LH 6, LH 7\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eImportant Note for Pre-2025 Spas\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eMost MasterSpas hot tubs and swim spas manufactured before 2025 used a female port that accepted a male-threaded filter. Beginning in 2025, that relationship flipped — the MA40 has a female thread designed for the new male port configuration. If your spa was manufactured before 2025, you may need a thread adapter for compatibility. If you know you need one, it is available for purchase separately on our site. If you are unsure, contact us before ordering and we will confirm the right fit for your specific model and year.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eReplace every 12 months under normal use, or every 6 months with heavier use.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eDue to the nature of filtration products, we cannot accept returns on opened or incorrectly ordered items. Please verify your model and production year before purchasing.\u003c\/em\u003e\u003c\/p\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344531349641,"sku":null,"price":60.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/MA40_TOP.jpg?v=1772557969"},{"product_id":"master-clear-mar3","title":"Master Clear® MA-R3 Filter - 2\" FPT","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe MA-R3 is the current-generation primary filter for a wide range of MasterSpas hot tubs and swim spas. Built with a 2-inch female pipe thread connection, it installs securely into your spa's filtration housing and is designed to accept the EcoPur® Charge Mineral Cartridge inside. Delivering both mechanical filtration and mineral purification in a single unit. The EcoPur® cartridge is sold separately.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eCompatible Models - Current Generation (2025+)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eClarity Series:\u003c\/em\u003e CLS Balance 6, CLS Balance 6 CS, CLS Balance 7, CLS Balance 8, CLS Balance 9, CLS Precision 7, CLS Precision 8\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eInstinct Series (2026+):\u003c\/em\u003e Natural Instinct, Pure Instinct, Vital Instinct\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eH2X Swim Spas:\u003c\/em\u003e Therapool 13, Therapool 15\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eTwilight Series:\u003c\/em\u003e TS 240X\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eAlso Compatible with These Older Models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe MA-R3 is the current-generation replacement for the older 1.5\" MAR3 filter used in these models before 2025.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eClarity Series:\u003c\/em\u003e CLS 1055, CLS 524, CLS 730, CLS 730L, CLS 738, CLS 738L, CLS 855, CLS 855L, CLS Precision 67\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eDown East Series:\u003c\/em\u003e East Hampton\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eHealthy Living Series:\u003c\/em\u003e HL 616L, HL 620L, HL 624L, HL 628L, HL 630L, HL 7, HL 7 NS, HL 7.5, HL 740L, HL 8, HL 8.5, HL 8DL\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eMP Swim Series:\u003c\/em\u003e Force, Force D, Momentum 80, Momentum 80 D, Signature\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eTwilight Series:\u003c\/em\u003e TS 120, TS 240\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eImportant Note for Pre-2025 Spas\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eMasterSpas hot tubs and swim spas manufactured before 2025 used a 1.5-inch female port. The MA-R3 uses a 2-inch female thread. If your spa was manufactured before 2025, you may need a thread adapter for compatibility. If you know you need one, it is available for purchase separately on our site. If you are unsure, contact us before ordering and we will confirm the right fit for your specific model and year.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eReplace every 12 months under normal use, or every 6 months with heavier use. If you use the EcoPur® Charge Cartridge, replace it every 6 months.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eDue to the nature of filtration products, we cannot accept returns on opened or incorrectly ordered items. Please verify your model and production year before purchasing.\u003c\/em\u003e\u003c\/p\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344531480713,"sku":null,"price":45.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/R3_TOP.jpg?v=1772557965"},{"product_id":"master-clear-mar4-2-fpt-filter","title":"Master Clear® MA-R4 Filter - 2\" FPT","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe MA-R4 is the current-generation primary filter for a wide range of MasterSpas hot tubs and swim spas. Built with a 2-inch female pipe thread connection, it seats securely into your spa's filtration housing and is designed to accept the EcoPur® Charge Mineral Cartridge inside — giving your water both mechanical filtration and mineral purification in a single unit.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThis is the correct filter for 2025 and newer models in the series listed below. If your spa was manufactured before 2025, use the compatibility list to confirm — many of these models transitioned to the R4 from the MAR1 in recent years.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eCompatible Models (2025–Current)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eTwilight Series:\u003c\/em\u003e TS 6.2, TS 67.25, TS 7.2, TS 7.25, TS 8.2, TS 8.25\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eMichael Phelps Legend Series:\u003c\/em\u003e MPL 30, MPL 700, MPL 800, MPL 850, MPL 900\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eH2X Swim Spas:\u003c\/em\u003e Therapool SE, Therapool D, Trainer 12, Trainer 15, Trainer 15D, Trainer 21D, Challenger 15D, Challenger 21D, Trainer 19D Max, Challenger 19D MAX\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eLiving Healthy Series:\u003c\/em\u003e LH L5, LH L6, LH S6, LH L7, LH S7\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eAlso Replaces the MAR1 Filter on Older Models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe MA-R4 is the current-generation replacement for the MAR1 filter. If your spa is from the list below and was manufactured before 2025, this is your filter.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eTwilight Series:\u003c\/em\u003e TS 6.1, TS 67.15, TS 7.1, TS 7.15, TS 8.3, TS 8.35, TS 87.3, TS FIT, TS MP\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eDown East Series:\u003c\/em\u003e Cape Cod, Exeter, Portsmouth, Somerset, Windsor, Windsor STS\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eLegacy Series:\u003c\/em\u003e LW 730L, LW Acclaim, LW Enterprise, LW Enterprise SE, LW Envision, LW Inspire, LW Inspire SE, LW Intrepid\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eLegend Series:\u003c\/em\u003e LSX, LSX 557, LSX 700, LSX 800, LSX 800 STS, LSX 850, LSX 850 STS, LSX 1000, LSX 1000 STS, LSX 1050, LSX 1050 STS\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eImportant Note for Pre-2025 Spas\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eMost MasterSpas hot tubs and swim spas manufactured before 2025 used a female port that accepted a male-threaded filter. Beginning in 2025, that relationship flipped — this MA-R4 has a female thread and is designed for the new male port configuration. If your spa was manufactured before 2025, you may need a thread adapter for compatibility. If you know you need one, it is available for purchase separately on our site. If you are unsure, contact us before ordering and we will confirm the right fit for your specific model and year.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eReplace every 12 months under normal use, or every 6 months with heavier use. If you use the EcoPur® Charge Cartridge, replace it every 6 months.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eDue to the nature of filtration products, we cannot accept returns on opened or incorrectly ordered items. Please verify your model and production year before purchasing.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344531611785,"sku":null,"price":65.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/MAR4.jpg?v=1780076421"},{"product_id":"master-spas-r4-15-mpt-filter","title":"Master Clear® MA-R4 Filter - 1.5\" MPT","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe MA-R4 1.5\" MPT (Male Pipe Thread) is the current-generation primary filter for a wide range of MasterSpas hot tubs and swim spas. Built with a 1.5-inch male pipe thread connection, it installs securely into your spa's filtration housing and is designed to accept the EcoPur® Charge Mineral Cartridge inside, delivering both mechanical filtration and mineral purification in a single unit. The EcoPur® cartridge is sold separately.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eUnlike the 2\" FPT version of the MA-R4, this filter uses a 1.5-inch male thread and does not require an adapter for pre-2025 spas.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eCompatible Models - Current Generation (2025+)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eLegacy Swim Spas:\u003c\/em\u003e LW 12, LW 15\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eH2X Swim Spas:\u003c\/em\u003e Challenger 19D\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eMP Swim Series:\u003c\/em\u003e Force D, Momentum, Momentum D, Signature Pro, Signature D\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eAlso Compatible with These Older Models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eH2X Swim Spas:\u003c\/em\u003e Challenger 15D, Challenger 18D, Challenger 18D Pro, Trainer 12, Trainer 14, Trainer 15, Trainer 15D, Trainer 17, Trainer 18, Trainer 18D, Trainer 19, Trainer 19D\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eMP Swim Series:\u003c\/em\u003e Force, Impact, Momentum 50, Momentum 80, Momentum 80 D, Signature, Signature S\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eReplace every 12 months under normal use, or every 6 months with heavier use. If you use the EcoPur® Charge Cartridge, replace it every 6 months.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eDue to the nature of filtration products, we cannot accept returns on opened or incorrectly ordered items. Please verify your model and production year before purchasing.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Master Pool \u0026 Spa Supply","offers":[{"title":"Default Title","offer_id":45344531710089,"sku":null,"price":65.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/PMA-R4.jpg?v=1780076319"},{"product_id":"master-clear-mar5","title":"Master Clear® MA-R5 Filter - 2\" FPT","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe MA-R5 is the current-generation primary filter for MasterSpas Getaway Series hot tubs and swim spas. Built with a 2-inch female pipe thread connection, it installs securely into your spa's filtration housing and is designed to accept the EcoPur® Charge Mineral Cartridge inside, delivering both mechanical filtration and mineral purification in a single unit. The EcoPur® cartridge is sold separately.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eCompatible Models - Current Generation (2025+)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eGetaway Series:\u003c\/em\u003e Bar Harbor LE, Bar Harbor SE, Ocho Rios CS, Ocho Rios SE, San Miguel\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eAlso Compatible with These Older Models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eGetaway Series:\u003c\/em\u003e Ocho Rios GS, Ocho Rios LE\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eImportant Note for Pre-2025 Spas\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eMasterSpas hot tubs and swim spas manufactured before 2025 used a female port that accepted a male-threaded filter. Beginning in 2025, that relationship flipped. The MA-R5 has a female thread designed for the new male port configuration. If your spa was manufactured before 2025, you may need a thread adapter for compatibility. If you know you need one, it is available for purchase separately on our site. If you are unsure, contact us before ordering and we will confirm the right fit for your specific model and year.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eReplace every 12 months under normal use, or every 6 months with heavier use. If you use the EcoPur® Charge Cartridge, replace it every 6 months.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eDue to the nature of filtration products, we cannot accept returns on opened or incorrectly ordered items. Please verify your model and production year before purchasing.\u003c\/em\u003e\u003c\/p\u003e","brand":"Master Pool \u0026 Spa Supply","offers":[{"title":"Default Title","offer_id":45344531742857,"sku":null,"price":45.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/R5-single.jpg?v=1780686842"},{"product_id":"master-clear-pww50","title":"Master Clear® PWW50P3 Filter - 1.5\" MPT","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe PWW50P3 is a companion filter for a wide range of MasterSpas hot tubs and swim spas. Built with a 1.5-inch male pipe thread connection, it works alongside the MA-R4 1.5\" MPT primary filter to provide complete filtration coverage for your spa. The PWW50P3 does not house an EcoPur® Charge Mineral Cartridge and is a dedicated mechanical filtration filter.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eCompatible Models - Current Generation (2025+)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eLegacy Swim Spas:\u003c\/em\u003e LW 12, LW 15\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eMP Swim Series:\u003c\/em\u003e Force D, Momentum, Momentum D, Signature Pro, Signature D\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eAlso Compatible with These Older Models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eH2X Swim Spas:\u003c\/em\u003e Challenger 15D, Challenger 18D, Challenger 18D Pro, Challenger 19D, Trainer 12, Trainer 14, Trainer 15, Trainer 15D, Trainer 17, Trainer 18, Trainer 18D, Trainer 19, Trainer 19D\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eMP Swim Series:\u003c\/em\u003e Force, Impact, Momentum 50, Momentum 80, Momentum 80 D, Signature, Signature S\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eReplace every 12 months under normal use, or every 6 months with heavier use.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eDue to the nature of filtration products, we cannot accept returns on opened or incorrectly ordered items. Please verify your model and production year before purchasing.\u003c\/em\u003e\u003c\/p\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344531972233,"sku":null,"price":60.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/PWW50_TOP.jpg?v=1772557969"},{"product_id":"master-clear-ecopur","title":"Master Clear EcoPur","description":"\u003cp data-start=\"152\" data-end=\"465\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 9.0pt; font-family: 'Courier New'; mso-fareast-font-family: 'Courier New'; color: #000c29; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;\"\u003eseries-instinct\u003c\/span\u003e\u003c\/b\u003eThe EcoPur® mineral cartridge is a key part of the Master Spas® filtration system. Designed to work alongside your primary spa filter (MA-R1, MA-R3, MA-R4, or MA-R5), EcoPur® uses a blend of natural minerals to help reduce chemical use, improve water clarity, and create a softer, more enjoyable spa experience.\u003c\/p\u003e\n\u003ch4 data-start=\"839\" data-end=\"855\"\u003e✨ \u003cstrong data-start=\"841\" data-end=\"853\"\u003eBenefits\u003c\/strong\u003e\n\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli data-start=\"839\" data-end=\"855\"\u003eHelps keep water clear and fresh\u003c\/li\u003e\n\u003cli data-start=\"895\" data-end=\"946\"\u003eReduces the need for chlorine and other chemicals\u003c\/li\u003e\n\u003cli data-start=\"949\" data-end=\"992\"\u003eFights bacteria, algae, and scale buildup\u003c\/li\u003e\n\u003cli data-start=\"995\" data-end=\"1033\"\u003eProtects spa plumbing and components\u003c\/li\u003e\n\u003cli data-start=\"1036\" data-end=\"1080\"\u003eSofter, more comfortable water for soaking\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong data-start=\"469\" data-end=\"487\"\u003eCompatibility:\u003c\/strong\u003e Works in combination with our MA-R1, MA-R3, MA-R4, and MA-R5 filters (not compatible with MA40 or PWW50).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-start=\"594\" data-end=\"620\"\u003eReplacement Frequency:\u003c\/strong\u003e Every 6 months for optimal performance.\u003c\/p\u003e\n\u003cp data-start=\"664\" data-end=\"844\"\u003e⚠️ \u003cstrong data-start=\"667\" data-end=\"676\"\u003eNote:\u003c\/strong\u003e EcoPur® cartridges are typically sold separately from our filters. However, some filter kits and bundles may include both the main filter and EcoPur® cartridge for added convenience.\u003c\/p\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344532201609,"sku":null,"price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/Ecopur.jpg?v=1780076169"},{"product_id":"master-clear-ma30","title":"Master Clear® MA30 Filter - 2\" FPT","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eMaster Clear® MA30 Filter - 2\" FPT (Female Pipe Thread)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe MA30 is the current-generation companion filter for a wide range of MasterSpas hot tubs and swim spas. Built with a 2-inch female pipe thread connection, it provides dedicated mechanical filtration and works alongside the MA-R3 primary filter in spas that require multiple filters. Unlike the MA-R3, the MA30 does not house an EcoPur® Charge Mineral Cartridge.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThis is the current-generation replacement for the PWW35L filter.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eCompatible Models - Current Generation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eClarity Series:\u003c\/em\u003e CLS 360\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eContractors Special Series:\u003c\/em\u003e CS 730, CS 730L, CS 738, CS 738L, CS 862\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eAlso Replaces the PWW35L on Older Models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eH2X Swim Spas:\u003c\/em\u003e Therapool 13, Therapool 15\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eImportant Note for Pre-2025 Spas\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eMasterSpas hot tubs and swim spas manufactured before 2025 used a 1.5-inch female port. The MA30 uses a 2-inch female thread. If your spa was manufactured before 2025, you may need a thread adapter for compatibility. If you know you need one, it is available for purchase separately on our site. If you are unsure, contact us before ordering and we will confirm the right fit for your specific model and year.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eReplace every 12 months under normal use, or every 6 months with heavier use.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eDue to the nature of filtration products, we cannot accept returns on opened or incorrectly ordered items. Please verify your model and production year before purchasing.\u003c\/em\u003e\u003c\/p\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344532168841,"sku":null,"price":45.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/MA30_TOP.jpg?v=1772557964"},{"product_id":"master-spas-pma15p3-filter","title":"MasterSpas PMA15P3 Filter","description":"\u003c!--StartFragment --\u003e\n\u003cp\u003eThe PMA15P3 is the \u003cstrong\u003eexact replacement filter\u003c\/strong\u003e required for select \u003cem\u003eMasterSpas H2X\u003c\/em\u003e and \u003cem\u003eChilly Goat\u003c\/em\u003e cold tubs. This cartridge provides the proper filtration capacity your spa was engineered for, ensuring clean, clear, and balanced water.\u003c\/p\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 × Master Clear PMA15P3 Filter\u003c\/strong\u003e – Compact cartridge designed to capture dirt, debris, and particles for superior water clarity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eImportant Fit Notes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fits all H2X Renegade cold tubs (uses one filter).\u003c\/li\u003e\n\u003cli\u003e✅ Fits all Chilly Goat Matterhorn cold tubs (uses one filter).\u003c\/li\u003e\n\u003cli\u003e✅ Fits all Chilly Goat Valaris dual‑zone tubs (uses two filters; one for the cold side and one for the hot side).\u003c\/li\u003e\n\u003cli\u003e🔒 Genuine Master Spas replacement part — required for proper operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e🗓️ \u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003cbr\u003eReplace every \u003cstrong\u003e12 months\u003c\/strong\u003e with regular care, or every \u003cstrong\u003e6 months\u003c\/strong\u003e with heavier use to maintain peak performance.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePlease verify your spa model before purchase. Due to the nature of the product, we cannot accept returns on opened or incorrectly ordered filters.\u003c\/p\u003e\n\u003c!--EndFragment --\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344532299913,"sku":null,"price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/PMA15P3.png?v=1780686484"},{"product_id":"leisure-time-filter-clean32-ounces","title":"Leisure Time Filter Clean-32 ounces","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eDeep Clean and Extend the Life of Your Spa Filters with Filter Cleaner.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThis filter cleaner is a powerful formula designed to remove built-up dirt, oils, grease, and scale from your spa filters. By soaking your filters overnight, this solution penetrates deep into the fibers to restore performance and improve water circulation.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eRegular use extends the lifespan of your filters and ensures cleaner, clearer spa water — saving you money and keeping your spa running at its best.\u003c\/span\u003e\u003c\/p\u003e","brand":"Master Pool \u0026 Spa Supply","offers":[{"title":"Default Title","offer_id":45344532594825,"sku":null,"price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/lt-filter-clean.webp?v=1780869078"},{"product_id":"master-spas-r5-filter-set","title":"MasterSpas R5 Filter Set","description":"\u003c!--StartFragment --\u003e\n\u003cp\u003eThis filter set is the \u003cstrong\u003eexact replacement\u003c\/strong\u003e required for all \u003cem\u003eMasterSpas Getaway Series\u003c\/em\u003e hot tubs. It combines mechanical filtration with mineral purification to deliver the water quality and performance your spa was engineered for.\u003c\/p\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 × Master Clear MA‑R5 Filter\u003c\/strong\u003e – High‑capacity cartridge that captures dirt, debris, and particles for superior water clarity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 × EcoPur® Charge Mineral Cartridge\u003c\/strong\u003e – Natural mineral technology that conditions water, reduces chemical demand, and improves overall water quality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eImportant Fit Notes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fits all Getaway Series hot tubs.\u003c\/li\u003e\n\u003cli\u003e🔒 Genuine Master Spas replacement parts — required for proper operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp\u003e🗓️ \u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilters: Replace every \u003cstrong\u003e12 months\u003c\/strong\u003e with regular care, or every \u003cstrong\u003e6 months\u003c\/strong\u003e with heavier use.\u003c\/li\u003e\n\u003cli\u003eEcoPur® cartridge: Replace every \u003cstrong\u003e6 months\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePlease verify your spa model before purchase. Due to the nature of the product, we cannot accept returns on opened or incorrectly ordered filter sets.\u003c\/p\u003e\n\u003c!--EndFragment --\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344533741705,"sku":null,"price":134.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/R5.jpg?v=1780686029"},{"product_id":"blu-water-pure-fill-pro","title":"Blu Water Pure Fill Pro","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eStart Your Master Spas Experience with Cleaner Water\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp\u003eEnsure every Master Spas hot tub fill begins with the cleanest possible water using the \u003cem\u003eBlu Water Pure Fill Pro Prefilter\u003c\/em\u003e. Designed for spa owners who want to protect their investment and simplify water care from day one, this easy-to-use hose attachment removes impurities before they ever reach the spa—reducing startup chemical demand and helping maintain water clarity longer.\u003c\/p\u003e\r\n\u003cp\u003eWhy It’s a Smart Add-On for Master Spas Owners:\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e🧊 \u003cstrong\u003eProtects Spa Surfaces \u0026amp; Plumbing\u003c\/strong\u003e: Filters out sediment, metals, and organics that can stain acrylic or interfere with pumps and heaters.\u003c\/li\u003e\r\n\u003cli\u003e💧 \u003cstrong\u003eImproves Water Chemistry Stability\u003c\/strong\u003e: Reduces contaminants that cause pH drift, sanitizer demand, and cloudy water.\u003c\/li\u003e\r\n\u003cli\u003e🔄 \u003cstrong\u003eExtends Filter \u0026amp; Chemical Life\u003c\/strong\u003e: Cleaner fill water means fewer adjustments and longer intervals between maintenance.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003eKey Features:\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003e0.5 Micron Carbon Block Filtration\u003c\/strong\u003e: Removes up to 99% of sediment, algae, mold spores, and bacteria.\u003c\/li\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003eMetal-Reducing Resin\u003c\/strong\u003e: Targets iron, copper, and other metals common in well or municipal water.\u003c\/li\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003eVOC \u0026amp; TOC Reduction\u003c\/strong\u003e: Helps eliminate volatile organic compounds and total organic carbon.\u003c\/li\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003eUniversal Fit\u003c\/strong\u003e: Connects to any standard garden hose—no tools required.\u003c\/li\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003eRated for Up to 1,200 Gallons\u003c\/strong\u003e: Ideal for multiple fills or top-offs.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003eIdeal For:\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eNew spa fills\u003c\/li\u003e\r\n\u003cli\u003eSeasonal water changes\u003c\/li\u003e\r\n\u003cli\u003eWell water or challenging municipal sources\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003eWhether you're filling a Clarity, Twilight, Michael Phelps Signature Series spa or any of the Master Spas options, the Blu Water Pure Fill Pro Prefilter is a simple upgrade that helps your water start clean—and stay clean.\u003c\/p\u003e\r\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Master Pool \u0026 Spa Supply","offers":[{"title":"Default Title","offer_id":45344533774473,"sku":null,"price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/PreFilter3.webp?v=1772558490"},{"product_id":"easy-clean-6000-filter-cleaner","title":"Easy Clean 6000 Filter Cleaner","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFast, Effective Filter Care for Master Spas\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp\u003eKeep your Master Spas running at its best with the \u003cem\u003eEasy Clean 6000 Filter Cleaner\u003c\/em\u003e. This handheld tool connects to a standard garden hose, blasting water deep into filter pleats to remove dirt, oils, and debris in minutes. Cleaner filters mean clearer water, longer filter life, and less strain on your spa’s circulation system.\u003c\/p\u003e\r\n\u003cp\u003eHighlights:\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003ePowerful multi-jet nozzle for deep pleat cleaning\u003c\/li\u003e\r\n\u003cli\u003eQuick, chemical-free maintenance\u003c\/li\u003e\r\n\u003cli\u003eExtends filter lifespan and improves water clarity\u003c\/li\u003e\r\n\u003cli\u003eLightweight, durable, and easy to store\u003c\/li\u003e\r\n\u003cli\u003eCompatible with all Master Spas filter cartridge\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Master Pool \u0026 Spa Supply","offers":[{"title":"Default Title","offer_id":45344533971081,"sku":null,"price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/EasyClaen6000.webp?v=1772557902"},{"product_id":"master-spas-r1-ma40-filter-set","title":"MasterSpas R1 (2\" FPT) \u0026 MA40 (2\" FPT) Filter Set","description":"\u003cdiv data-shopify-editor-block='{\"id\":\"template--19785348153556__main__description\",\"domId\":\"description\",\"type\":\"description\"}' class=\"product__description rte quick-add-hidden\"\u003e\n\u003c!--StartFragment --\u003e\n\u003cp\u003eThis filter set is the \u003cstrong\u003eexact replacement\u003c\/strong\u003e required for \u003cem\u003eMasterSpas Legacy Series\u003c\/em\u003e and \u003cem\u003eMichael Phelps Legend Series\u003c\/em\u003e hot tubs manufactured in \u003cstrong\u003e2024 or earlier\u003c\/strong\u003e. It also fits \u003cem\u003eH2X Therapool SE and D models manufactured in 2024 or earlier\u003c\/em\u003e, as well as select \u003cstrong\u003e2025 Legacy and Michael Phelps Legend models built in the Heritage style\u003c\/strong\u003e. This combination of cartridges provides the proper filtration and mineral purification capacity your spa was engineered for.\u003c\/p\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 × Master Clear MA‑R1 Filter (2\" FPT)\u003c\/strong\u003e – Captures dirt, debris, and particles for superior water clarity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 × Master Clear MA‑40 Filter (2\" FPT)\u003c\/strong\u003e – Larger capacity cartridge for enhanced filtration performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 × EcoPur® Charge Mineral Cartridge\u003c\/strong\u003e – Natural mineral technology that conditions water, reduces chemical demand, and improves overall water quality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eImportant Fit Notes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fits all Legacy Series and Michael Phelps Legend Series spas manufactured in 2024 or earlier.\u003c\/li\u003e\n\u003cli\u003e✅ Fits H2X Therapool SE and D models manufactured in 2024 or earlier.\u003c\/li\u003e\n\u003cli\u003e✅ Fits select 2025 Legacy and Michael Phelps Legend models built in the Heritage style.\u003c\/li\u003e\n\u003cli\u003e❌ Not compatible with newer 2025+ models using updated filter configurations.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e🗓️ \u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilters: Replace every \u003cstrong\u003e12 months\u003c\/strong\u003e with regular care, or every \u003cstrong\u003e6 months\u003c\/strong\u003e with heavier use.\u003c\/li\u003e\n\u003cli\u003eEcoPur® cartridge: Replace every \u003cstrong\u003e6 months\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePlease verify your spa’s year and model before purchase. Due to the nature of the product, we cannot accept returns on opened or incorrectly ordered filter sets.\u003c\/p\u003e\n\u003c!--EndFragment --\u003e\n\u003c\/div\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344534331529,"sku":"r1-ma40-set","price":194.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/r1-ma40set.jpg?v=1780685528"},{"product_id":"master-spas-dual-r3-filter-set","title":"MasterSpas Dual R3 Filter Set","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003c!--StartFragment --\u003e\n\u003cp\u003eThis filter set is the \u003cstrong\u003eexact replacement\u003c\/strong\u003e required for all \u003cem\u003eMasterSpas H2X Therapool 13 and Therapool 15\u003c\/em\u003e swim spas, across all years of manufacture. It provides the proper filtration and mineral purification capacity your spa was engineered for, ensuring clean, clear, and balanced water.\u003c\/p\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 × Master Clear MA‑R3 Filters\u003c\/strong\u003e – Compact cartridges designed to capture dirt, debris, and particles for superior water clarity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 × EcoPur® Charge Mineral Cartridge\u003c\/strong\u003e – Natural mineral technology that conditions water, reduces chemical demand, and improves overall water quality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eImportant Fit Notes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fits all \u003cstrong\u003eTherapool 13 swim spas\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e✅ Fits all \u003cstrong\u003eTherapool 15 swim spas\u003c\/strong\u003e.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e🗓️ \u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilters: Replace every \u003cstrong\u003e12 months\u003c\/strong\u003e with regular care, or every \u003cstrong\u003e6 months\u003c\/strong\u003e with heavier use.\u003c\/li\u003e\n\u003cli\u003eEcoPur® cartridge: Replace every \u003cstrong\u003e6 months\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePlease verify your spa’s model before purchase. Due to the nature of the product, we cannot accept returns on opened or incorrectly ordered filter sets.\u003c\/p\u003e\n\u003c!--EndFragment --\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344534560905,"sku":null,"price":239.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/dualR3.jpg?v=1780685143"},{"product_id":"master-spas-dual-ma40-filter-set","title":"MasterSpas Dual MA40 Filter Set","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp\u003eThis filter set is the \u003cstrong\u003ealternative replacement\u003c\/strong\u003e for \u003cem\u003eMasterSpas Twilight Series\u003c\/em\u003e and \u003cem\u003eMichael Phelps Legend Series\u003c\/em\u003e hot tubs manufactured in \u003cstrong\u003e2025\u003c\/strong\u003e that are configured to run on \u003cstrong\u003esaltwater systems\u003c\/strong\u003e. Instead of the standard R4 \u0026amp; MA40 combination with EcoPur®, this bundle uses two MA40 filters to deliver the required filtration capacity without EcoPur® mineral conditioning.\u003c\/p\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 × Master Clear MA‑40 Filters\u003c\/strong\u003e – Large‑capacity cartridges designed to capture dirt, debris, and particles for superior water clarity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eImportant Fit Notes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Designed for 2025 Twilight Series and Michael Phelps Legend saltwater models.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e❌ Does not accept EcoPur® Charge cartridge — mineral purification benefits are not included.\u003c\/li\u003e\n\u003cli\u003e🔒 Genuine Master Spas replacement parts — required for proper operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp\u003e🗓️ \u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilters: Replace every \u003cstrong\u003e12 months\u003c\/strong\u003e with regular care, or every \u003cstrong\u003e6 months\u003c\/strong\u003e with heavier use.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis bundle is ideal for spa owners running saltwater systems. Please verify your spa’s year, series, and water sanitation system type before purchase. Due to the nature of the product, we cannot accept returns on opened or incorrectly ordered filter sets.\u003c\/p\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344534593673,"sku":null,"price":120.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/MA40.jpg?v=1780078316"},{"product_id":"master-spas-r4-15-mpt-two-pww50p3-filter-set","title":"MasterSpas R4 (1.5\" MPT) \u0026 Two PWW50P3 Filter Set","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\r\n\u003cp\u003eThis filter set is the \u003cstrong\u003eexact replacement\u003c\/strong\u003e required for specific \u003cem\u003eMaster Spas Trainer Series\u003c\/em\u003e, \u003cem\u003eChallenger Series\u003c\/em\u003e, and \u003cem\u003eMichael Phelps Swim Spas\u003c\/em\u003e. The R4 cartridge, built with a \u003cstrong\u003e1.5‑inch male pipe thread connector\u003c\/strong\u003e, is designed to house the EcoPur® Charge Mineral Cartridge inside. The two PWW50P3 cartridges install alongside the R4 to complete the filtration system, ensuring the water clarity and purification balance your swim spa was engineered for.\u003c\/p\u003e\r\n\u003cp\u003eIncludes:\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003e1 × Master Clear MA‑R4 Filter (1.5\" MPT)\u003c\/strong\u003e – Primary cartridge designed to capture dirt, debris, and particles.\u003c\/li\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003e1 × EcoPur® Charge Mineral Cartridge\u003c\/strong\u003e – Fits inside the R4 for mineral purification.\u003c\/li\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003e2 × Master Clear PWW50P3 Filters\u003c\/strong\u003e – Cartridges that work with the R4 to deliver full system performance.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003eImportant Fit Notes:\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003e2025 Trainer 12\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003eall years MP Swim Force and Force D (except 2017)\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003eall years MP Signature D\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003e2024 and older Challenger 15 D\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003e2024 and older Trainer 15 and Trainer 15 D\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003eall years Challenger 18 D and 18 D Pro\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003e2015 and newer Trainer 18\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003eall Trainer 18 D\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003eall MP Swim Signature D\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003eall MP Swim Signature (except 2017)\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003eall MP Swim Signature S\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e❌ Not compatible with newer 2025+ models using the \u003cstrong\u003eR4 (2\" FPT) bundle\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e🗓️ \u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eFilters: Replace every \u003cstrong\u003e12 months\u003c\/strong\u003e with regular care, or every \u003cstrong\u003e6 months\u003c\/strong\u003e with heavier use\u003c\/li\u003e\r\n\u003cli\u003eEcoPur® cartridge (inside the R4): Replace every \u003cstrong\u003e6 months\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e \u003c\/p\u003e\r\n\u003cp\u003ePlease verify your swim spa’s model and production year before purchase. Due to the nature of the product, we cannot accept returns on opened or incorrectly ordered filter sets.\u003c\/p\u003e\r\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344534724745,"sku":null,"price":259.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/2_PWW50P3_1_PMA-R4_1_PMA-EPR_Filter_Set.jpg?v=1780684682"},{"product_id":"master-spas-r3-two-pww50-filter-set","title":"MasterSpas R3 \u0026 Two PWW50 Filter Set","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\r\n\u003cp\u003eThis filter set is the \u003cstrong\u003eexact replacement\u003c\/strong\u003e required for select \u003cem\u003eMichael Phelps Swim Spas\u003c\/em\u003e manufactured in 2017. The R3 cartridge, built with a male pipe thread connector, is designed to house the EcoPur® Charge Mineral Cartridge inside. The two PWW50P3 cartridges install alongside the R3 to complete the filtration system, ensuring the water clarity and purification balance your swim spa was engineered for.\u003c\/p\u003e\r\n\u003cp\u003eIncludes:\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003e1 × Master Clear MA‑R3 Filter (MPT)\u003c\/strong\u003e – Primary cartridge designed to capture dirt, debris, and particles.\u003c\/li\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003e1 × EcoPur® Charge Mineral Cartridge\u003c\/strong\u003e – Fits inside the R3 for mineral purification.\u003c\/li\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003e2 × Master Clear PWW50P3 Filters\u003c\/strong\u003e – Cartridges that work with the R3 to deliver full system performance.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003eImportant Fit Notes:\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003e2017 MP Swim Force and Force D\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003e2017 MP Swim Signature\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e❌ Not compatible with other production years or models outside this specification\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e🗓️ \u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eFilters: Replace every \u003cstrong\u003e12 months\u003c\/strong\u003e with regular care, or every \u003cstrong\u003e6 months\u003c\/strong\u003e with heavier use\u003c\/li\u003e\r\n\u003cli\u003eEcoPur® cartridge (inside the R3): Replace every \u003cstrong\u003e6 months\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e \u003c\/p\u003e\r\n\u003cp\u003ePlease verify your swim spa’s model and production year before purchase. Due to the nature of the product, we cannot accept returns on opened or incorrectly ordered filter sets.\u003c\/p\u003e\r\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344534823049,"sku":null,"price":239.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/R3_with_Eco.webp?v=1772582795"},{"product_id":"master-spas-r4-2-fpt-three-ma40-filter-set","title":"MasterSpas R4 (2\" FPT) \u0026 Three MA40 Filter Set","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp\u003eThis filter set is the \u003cstrong\u003eexact replacement\u003c\/strong\u003e required for select \u003cem\u003eMasterSpas Trainer Series\u003c\/em\u003e and \u003cem\u003eChallenger Series\u003c\/em\u003e swim spas manufactured in 2025. The R4 cartridge, built with a \u003cstrong\u003e2‑inch female pipe thread connector\u003c\/strong\u003e, is designed to house the EcoPur® Charge Mineral Cartridge inside. The three MA40 cartridges install alongside the R4 to complete the filtration system, delivering the full water clarity and purification balance your swim spa was engineered for.\u003c\/p\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 × Master Clear MA‑R4 Filter (2\" FPT)\u003c\/strong\u003e – Primary cartridge designed to capture dirt, debris, and particles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 × EcoPur® Charge Mineral Cartridge\u003c\/strong\u003e – Fits inside the R4 for mineral purification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3 × Master Clear MA‑40 Filters\u003c\/strong\u003e – Cartridges that work with the R4 to deliver full system performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eImportant Fit Notes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fits \u003cstrong\u003e2025 Trainer 15\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e✅ Fits \u003cstrong\u003e2025 Trainer 15 D\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e✅ Fits \u003cstrong\u003e2025 Challenger 15 D\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e❌ Not compatible with other Trainer or Challenger models outside these specifications\u003c\/li\u003e\n\u003cli\u003e❌ Not compatible with swim spas using the \u003cstrong\u003eR4 (1.5\" MPT) bundles\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e🗓️ \u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilters: Replace every \u003cstrong\u003e12 months\u003c\/strong\u003e with regular care, or every \u003cstrong\u003e6 months\u003c\/strong\u003e with heavier use\u003c\/li\u003e\n\u003cli\u003eEcoPur® cartridge (inside the R4): Replace every \u003cstrong\u003e6 months\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePlease verify your swim spa’s model and production year before purchase. Due to the nature of the product, we cannot accept returns on opened or incorrectly ordered filter sets.\u003c\/p\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344534855817,"sku":null,"price":319.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/R4_and_3_MA40.webp?v=1772582795"},{"product_id":"master-spas-two-r3-three-pww50p3-filter-set","title":"MasterSpas Two R3 \u0026 Three PWW50P3 Filter Set","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\r\n\u003cp\u003eThis filter set is the \u003cstrong\u003eexact replacement\u003c\/strong\u003e required for the \u003cem\u003e2017 Michael Phelps Swim Momentum 80\u003c\/em\u003e and \u003cem\u003eMomentum 80 D\u003c\/em\u003e swim spas. Each R3 cartridge, built with a male pipe thread connector, is designed to house the EcoPur® Charge Mineral Cartridge inside. The three PWW50P3 cartridges install alongside the R3s to complete the filtration system, delivering the full water clarity and purification balance your swim spa was engineered for.\u003c\/p\u003e\r\n\u003cp\u003eIncludes:\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003e2 × Master Clear MA‑R3 Filters (MPT)\u003c\/strong\u003e – Primary cartridges designed to capture dirt, debris, and particles.\u003c\/li\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003e2 × EcoPur® Charge Mineral Cartridges\u003c\/strong\u003e – Fit inside the R3s for mineral purification.\u003c\/li\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003e3 × Master Clear PWW50P3 Filters\u003c\/strong\u003e – Cartridges that work with the R3s to deliver full system performance.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003eImportant Fit Notes:\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003e2017 MP Swim Momentum 80\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003e2017 MP Swim Momentum 80 D\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e❌ Not compatible with other production years or models outside this specification\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e🗓️ \u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eFilters: Replace every \u003cstrong\u003e12 months\u003c\/strong\u003e with regular care, or every \u003cstrong\u003e6 months\u003c\/strong\u003e with heavier use\u003c\/li\u003e\r\n\u003cli\u003eEcoPur® cartridges (inside the R3s): Replace every \u003cstrong\u003e6 months\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e \u003c\/p\u003e\r\n\u003cp\u003ePlease verify your swim spa’s model and production year before purchase. Due to the nature of the product, we cannot accept returns on opened or incorrectly ordered filter sets.\u003c\/p\u003e\r\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Master Pool \u0026 Spa Supply","offers":[{"title":"Default Title","offer_id":45344534986889,"sku":null,"price":419.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/R3_with_Eco.webp?v=1772582795"},{"product_id":"master-spas-two-r4-2-fpt-four-ma40-filter-set","title":"MasterSpas Two R4 (2\" FPT) \u0026 Four MA40 (2\" FPT) Filter Set","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp\u003eThis filter set is the \u003cstrong\u003eexact replacement\u003c\/strong\u003e required for the \u003cem\u003e2025 MasterSpas Challenger 21 D\u003c\/em\u003e and \u003cem\u003eTrainer 21 D\u003c\/em\u003e swim spas. Each R4 cartridge, built with a \u003cstrong\u003e2‑inch female pipe thread connector\u003c\/strong\u003e, is designed to house the EcoPur® Charge Mineral Cartridge inside. The four MA40 cartridges install alongside the R4s to complete the filtration system, delivering the full water clarity and purification balance your swim spa was engineered for.\u003c\/p\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 × Master Clear MA‑R4 Filters (2\" FPT)\u003c\/strong\u003e – Primary cartridges designed to capture dirt, debris, and particles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 × EcoPur® Charge Mineral Cartridges\u003c\/strong\u003e – Fit inside the R4s for mineral purification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 × Master Clear MA‑40 Filters\u003c\/strong\u003e \u003cstrong\u003e(2\" FPT)\u003c\/strong\u003e – Cartridges that work with the R4s to deliver full system performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eImportant Fit Notes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fits \u003cstrong\u003e2025+ Challenger 21 D\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e✅ Fits \u003cstrong\u003e2025+ Trainer 21 D\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e❌ Not compatible with other Trainer or Challenger models outside these specifications\u003c\/li\u003e\n\u003cli\u003e❌ Not compatible with older swim spas using the \u003cstrong\u003eR4 (1.5\" MPT) bundles\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e🗓️ \u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilters: Replace every \u003cstrong\u003e12 months\u003c\/strong\u003e with regular care, or every \u003cstrong\u003e6 months\u003c\/strong\u003e with heavier use\u003c\/li\u003e\n\u003cli\u003eEcoPur® cartridges (inside the R4s): Replace every \u003cstrong\u003e6 months\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePlease verify your swim spa’s model and production year before purchase. Due to the nature of the product, we cannot accept returns on opened or incorrectly ordered filter sets.\u003c\/p\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Master Spas West","offers":[{"title":"Default Title","offer_id":45344535183497,"sku":null,"price":519.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/IMG_2351.webp?v=1772582795"},{"product_id":"master-spas-r4-15-mpt-three-ma40-filter-set","title":"MasterSpas R4 (1.5\" MPT) \u0026 Three MA40 Filter Set","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp\u003eThis filter set is the \u003cstrong\u003eexact replacement\u003c\/strong\u003e required for the \u003cem\u003e2025 MasterSpas Challenger 19 D\u003c\/em\u003e and \u003cem\u003eTrainer 19 D Max\u003c\/em\u003e swim spas. The R4 cartridge, built with a \u003cstrong\u003e1.5‑inch male pipe thread connector\u003c\/strong\u003e, is designed to house the EcoPur® Charge Mineral Cartridge inside. 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Due to the nature of the product, we cannot accept returns on opened or incorrectly ordered filter sets.\u003c\/p\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344535281801,"sku":null,"price":319.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/R4_and_3_MA40.webp?v=1772582795"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/collections\/collection-series-logos1.jpg?v=1779827770","url":"https:\/\/shop.masterspaswest.com\/collections\/filters.oembed","provider":"MasterSpas West","version":"1.0","type":"link"}