• Outer Diameter: 6" Length: 5 1/2" Top Style: Closed Handle; Bottom Style: 1 1/2" MPT; Media: 25 SF
• Compatible with Unicel 6CH-25, Filbur FC-0305, PTL20W-SV-P-4, and Softub 90-802 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