Specification Brand : Hurricane BulletPoint1 : REPLACEMENT FOR - The Hurricane HF4H21-02 Advanced Cartridge Filter is compatible for Unicel: 4CH-21, Pleatco: PTL18P4, Filbur: FC-0136, and other compatible models. Original manufacturer's names and part numbers are for reference only. Look for the Hurricane Filters exclusive turquoise end caps to ensure you're getting a premier filter made in the USA. BulletPoint2 : DIMENSIONS - We manufacture to tighter tolerances than other pool filter brands. This product measures: Length 8 inches, outer diameter 4.625 inches, Top handle, Bottom hole 1.5 Threaded inches. Measure your current filter's dimensions if you're unsure of product fit. BulletPoint3 : SUPERIOR FILTRATION – Our advanced point bond filter media has tighter filtration capabilities compared to trilobal media material or classic non-woven media. That means a superior filtration of biomass, dirt, debris, hair, leaves and critters to help keep your pool or spa aseptic, clean and safe for your family BulletPoint4 : SAVE MONEY – We’re trusted by pool companies, commercial swimming pools and our most important customers, residential pool and spa owners across the United States. Our filters last longer and are easier to clean, which means less money spent on filters every season and reduced wear and tear on your pump. BulletPoint5 : GET SWEPT UP IN CLEAN – Hurricane pool and spa filters is proud to be a USA company with domestic production, warehousing and office space. Save big with superior pleat material, end caps and MAX FLOW cores compared to imported pool and spa filters. 1-Click Buy, Add-to-Cart or sign up to Subscribe & Save to get the best price! Color : Advanced CompatibleDevices : Active 10, Active 15, Advantage, Cayman, E10, Echo, Encore, Escape, Explorer E20, Nautilus CC, Proteus DX3, Prowler 910, Prowler 917, S100, S50, Solo, T15, T25, Warrior SL. CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier1 : 0810151300658 ExternallyAssignedProductIdentifier2 : 810151300658 ExternallyAssignedProductIdentifier3 : 00816920020345 ExternallyAssignedProductIdentifier4 : 0852673936380 ExternalTestingCertification : NSF IncludedComponents : Plastic ItemDisplayDimensions_Height : 15.5 inches ItemDisplayDimensions_Length : 15.5 inches ItemDisplayDimensions_Width : 6.75 inches ItemDisplayWeight : 3.29 pounds ItemName : Hurricane Filters - 2 Pack HF4H21-02 Advanced Pool Filter Cartridge - Replacement for PTL18P4, Unicel 4CH-21, Filbur FC-0136, Pageant Spa Top Load - Best Value USA Pool & Spa Filters ItemPackageDimensions_Height : 8 inches ItemPackageDimensions_Length : 5 inches ItemPackageDimensions_Width : 5 inches ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : swimming-pool-cartridge-filters ItemTypeName : pool filter cartridge Manufacturer : Hurricane Filters Material : Plastic ModelName : HF4H21 ModelNumber : HF4H21 NumberOfBoxes : 1 NumberOfItems : 2 NumberOfPieces : 8 PartNumber : 2 x PowerSourceType : manual ProductDescription : Dive into pristine waters with the Hurricane HF4H21-02 Advanced Cartridge Filter, where unparalleled cleanliness awaits. Crafted with meticulous precision, this filter guarantees seamless compatibility with Unicel 4CH-21, PTL18P4, Filbur FC-0136, and other compatible models. With dimensions measuring 8 inches in length, an outer diameter of 4.63 inches, a top handle, and a bottom hole of 1.5 inches, achieving an ideal fit is effortless, measure your current filter for a flawless match. Experience a new level of filtration prowess with the advanced point bond filter media of this spa essential, elevating filtration effectiveness beyond traditional non-woven materials. From biomass to dirt, debris, hair, leaves, and even critters, this pool filter is a formidable barrier, leaving your pool or spa immaculate and inviting. Esteemed by both industry professionals and homeowners, this spa accessory is meticulously engineered for durability, ensuring prolonged service life and effortless upkeep. Bid farewell to the inconvenience of frequent replacements and welcome substantial savings on filters, all while minimizing wear and tear on your pump. Discover the exceptional cleaning prowess of the Hurricane HF4H21-01 Advanced Cartridge Filter, your ultimate solution for pristine waters and unparalleled excellence. ProductSiteLaunchDate : 2009-06-07T00:00:00.000Z Reusability : Reusable SkipOffer : 1 Style : 2 Pack SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1 WebsiteShippingWeight : 0.889 kilograms