Specification Brand : SpiroPure BulletPoint1 : Outer Diameter: 8 1/2" Length: 23 5/16" Top Style: 4-1/16" Open; Bottom Style: 4-1/16" Open; Media: 100 SF BulletPoint2 : Compatible with Star Clear II C1100 Pleatco PA100 Unicel C-8610 Hayward CX1100RE Filbur FC-1290 Hot Tub Spa Filter. 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. 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 Color : 4pcs CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier1 : 0840162415461 ExternallyAssignedProductIdentifier2 : 840162415461 ItemName : SpiroPure Replacement for Star Clear II C1100 Pleatco PA100 Unicel C-8610 Hayward CX1100RE Filbur FC-1290 Hot Tub Spa Pool Filter Replacement Cartridge ItemPackageDimensions_Height : 24 inches ItemPackageDimensions_Length : 9.5 inches ItemPackageDimensions_Width : 9.5 inches ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : swimming-pool-cartridge-filter-inserts ItemTypeName : W28145 Manufacturer : SpiroPure Material : Silver ModelName : W28145 ModelNumber : SP-PS-1290 NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : SP-PS-1290 PowerSourceType : no ProductDescription : SpiroPure SP-PS-1290 Hottub Spa Pool Filter Replacement Cartridge. Easy to install, durable filter cartridges that allow for high filtration performance and efficiency. Size : 8 1/2" x 23 5/16" Style : Direct Replacement SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1