Description
This two-pack of MA40 filters is the ideal filtration solution for MasterSpas hot tubs and swim spas running a salt system. Salt system owners replace both filter slots with MA40 mechanical filters, delivering clean, clear water without the need for an EcoPur® Charge Mineral Cartridge.
Compatible Models — Current Generation (2025+)
Twilight Series: TS 6.2, TS 67.25, TS 7.2, TS 7.25, TS 8.2, TS 8.25
Michael Phelps Legend Series: MPL 30, MPL 700, MPL 800, MPL 850, MPL 900
H2X Swim Spas: Therapool SE, Therapool D
Also Compatible with These Older Models
Twilight Series: 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
Legend Series: 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
Important Note for Pre-2025 Spas
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. Both filters in this pack have 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.
Replacement Schedule
Replace every 12 months under normal use, or every 6 months with heavier use.
Due 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.
