• Outer Diameter: 4 15/16" Length: 14 7/8" Top Style: 2 1/8” Open; Bottom Style: 2 1/8" Open; Media: 50 SF
• Compatible with Pleatco PMT50, Unicel C-4305, Filbur FC-1630, Sundance 6540-497, Martec CL-2807 / CL-2810, and Sonfarrel 220142 / 220145 / 220152 / 220175 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