SpiroPure Replacement for AquaTerra 303279 78460 Filbur FC-2402 Unicel 5CH-37 Pleatco PFF42TC-P4 Watkins ACT-50SQFLTR LSX1057 Hot Tub Spa Pool Replacement Cartridge

Outer Diameter: 5-3/8 Length: 9-1/2 Top Style: Closed String Handle; Bottom Style: 1-1/2 MPT Compatible with Watkins Aquaterra 303279 / 78460, Filbur FC-2402, Unicel 5CH-37, Pleatco PFF42TC-P4, and Watkins ACT-50SQFLTR / LSX1057 Hot Tub Spa Filters. SpiroPure pool and spa filter cartridges offer long-lasting, durable filter media with high dirt holding capacity for clear, sparkling water in your pool or hot tub spa. A strong inner core means increased strength without hindering water flow or filtration performance. Easy to install, durable filter cartridges that allow for high filtration performance and efficiency