POOLPURE Replacement for Spa Filter PWW50P3(1 1/2" Coarse Thread), Unicel 6CH-940, 817-0050, Filbur FC-0359, 25252, 378902, 03FIL1400, 45 sq.ft Screw in Hot Tub Filter,L x OD:7 5/8"x 6" 2 Pack

Also compatible these filters: Aber Hot Tub 03FIL1400, American Spas, Apollo Spas, Arcadia Spas, Atera Spas, Belize Spas, Canspa Mfg (Canada), Catalina Spas, Charisma Spas, Clearwater Spas, Dakota Spas, Dynasty Spas, Haven Spas, Hawkeye Spas, Rec Warehouse 378902, Leisure Bay Spas Continued, Millennium Spas, Phoenix Spas, Sunbelt Spas, Superior Spas, Tatum Manufacturing, Thermo Spas, Tuff Spas, Viking Spas Aladdin 14510, Baleen AK-9019, Darlly 60401, Excel Filters XLS-601, Filbur FC-0359, Filbur FC-0359M, PWW50P3, PWW50P3-M, Pure N Clean PC-0359, Magnum WY45, Rec Factory Warehouse 378902, SD-00031, SD-00710, Unicel 6CH-940, Unicel 6CH-940RA, 03FIL1400, 14510, 17-175-1747, 25252, 25252-800, 4900-301, 4902-076, 4904-009, 645544003591, 645544103598, 785061823, 817-0050, 817-0500, FC-0359-HB, P6CH-940, PC-0359, PLE-051-9193, PLE-051-9194, PWW-50 W/PAD-3, PWW50-M, PWW50-P3, PWW50P3-M , SC714, UNI6CH-940, Waterway Front Access Skimmer 50 SF