Specification Brand : Purelixir BulletPoint1 : NSF Certified Filtration: Certified by NSF/ANSI 50 for safe, clean, and clear water in pools and spas, enhancing your swimming experience. BulletPoint2 : Specifications: Length: 19 1/2"; Outside Diameter: 10 1/8"; Top & Bottom Opening: 4", Filtration Area: 100 sq. ft. BulletPoint3 : Wide Compatibility: compatible with PA100S, Hayward SwimClear C100S, CX100XRE, CS100E, Unicel C-9440, Spa-Daddy , SD-01332. Suitable for pools/spas by: Waterway Plastics, Leisure Bay Manufacturing , Hayward and other manufacturers. NOTE: Original brand names and part numbers are provided solely for reference. Purelixir is an independent brand, not affiliated with any original manufacturers. BulletPoint4 : High Dirt-Holding Capacity: Crafted with Trilobal fabric that traps hair, leaves, dust, and fine debris more efficiently than standard filters. BulletPoint5 : Easy to Clean: The advanced Trilobal structure releases dirt quickly during washing, helping maintain filtration efficiency over time. GpsrSafetyAttestation : 1 ItemName : Purelixir NSF Certified C100S Pool Filter Compatible with Hayward CX100XRE, Hayward SwimClear C100S, PA100S, Unicel C-9440, Ultral-D3, 100 Sq. Ft, L x OD:28 3/16" x 10 1/8", 1-Pack ItemPackageDimensions_Height : 53.34 centimeters ItemPackageDimensions_Length : 27.305 centimeters ItemPackageDimensions_Width : 27.94 centimeters ItemTypeKeyword : swimming-pool-cartridge-filter-inserts Manufacturer : Purelixir ProductDescription : C100S Pool Filter SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 21000000