Specification Brand : SpiroPure BulletPoint1 : Outer Diameter: 5-3/8” Length: 14-3/4” Top Style: 2-1/8" Open Bottom Style: 2-1/8" Open Media: 57.3 sqft Enhanced Blue Media BulletPoint2 : Compatible with Pleatco PLBS75-M / PLBS75, Unicel C-5374 / C-5374RA, Filbur FC-2971M / FC-2971, Maax 107092, Leisure Bay S2/GS Spa, Waterway 817-0015, Rec Warehouse 303433, and Pentair Rainbow R173600 Hot Tub Spa Filters BulletPoint3 : 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, and SpiroPure blue media filters offer enhanced protection for your filter cartridge BulletPoint4 : A strong inner core means increased strength without hindering water flow or filtration performance BulletPoint5 : Easy to install, durable filter cartridges that allow for high filtration performance and efficiency ExternallyAssignedProductIdentifier1 : 0840162426368 ExternallyAssignedProductIdentifier2 : 840162426368 ItemName : SpiroPure Replacement for Pleatco PLBS75-M PLBS75 Unicel C-5374 C-5374RA Filbur FC-2971M FC-2971 Maax 107092 S2/GS Spa Blue Media Hot Tub Spa Pool Replacement Cartridge ItemPackageQuantity : 1 ItemTypeKeyword : swimming-pool-cartridge-filters Manufacturer : SpiroPure ModelNumber : SP-PS-2971M PartNumber : SP-PS-2971M ProductDescription : SpiroPure SP-PS-2971M Blue Media Hottub Spa Pool Filter Replacement Cartridge. Easy to install, durable filter cartridges that allow for high filtration performance and efficiency. Blue media cartridge offers enhanced protection for your filter cartridge.