• Outer Filter Diameter: 8-7/16” Outer Length: 19-3/4” Outer Filter Top Style: 2-1/2” Male Slip; Outer Filter Bottom Style: 4-7/16” Open; Inner Filter Diameter: 5-5/8” Inner Filter Length: 18-3/4” Inner Filter Top Style: 2-13/16” Open; Inner Filter Bottom Style: 2-3/4” Open
• Compatible with Sundance 6541-397 (6473-164 & 6473-165) / 6540-507 and Filbur FC-2772 (FC-2769 & FC-2771 Kit) 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