SPECIFICATIONS - Outer Diameter: 7” Length: 29-3/8” Top Style: 3” Open Bottom Style: 3" Open; 100 sqft filter cartridge QUALITY REPLACEMENT - Compatible with Pleatco PCM100SV, Unicel C-7499, Filbur FC-0650, Premier Springwater Hercules II 27-084 / 27084, and Pentair American Commander 57014400 Cartridge Hot Tub Spa Filters PREMIUM MEDIA - 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 DURABLE CORE - A strong inner core means increased strength without hindering water flow or filtration performance EASY INSTALLATION - Easy to install, durable filter cartridges that allow for high filtration performance and efficiency

SpiroPure SP-PS-0650 Hottub Spa Pool Filter Replacement Cartridge. Easy to install, durable filter cartridges that allow for high filtration performance and efficiency.