Specification Brand : Generic BulletPoint : ✅ REPLACEMENT FOR - The Hurricane HF4H23-01 Cartridge Filter is compatible for Unicel: 4CH-23, PFF25TC-P4, Filbur: FC-2400, FreeFlow Lagas, TLX, RLX and other compatible models. Original manufacturer's names and part nu6.63mbers 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. BulletPoint1 : 【Replacement Part Numbers】The PWK35B hot tub filter can compatible with Watkins 1642301-1, 78161, 78286, Pleatco PWK35B, Filbur FC-3921. Please carefully check the part number with your original items before ordering BulletPoint2 : 【Compatibility Models】This 35 Sq.Ft filtration area filter cartridge is designed specifically for the hot spring limelight series: pulse, flair, flash & beam for a seamless fit BulletPoint3 : 【Superior Filtration】This PWK35B Spa filter are made of superior trilobal structure fabric, which can effectively capture hair, leaves, dirt, sediment, and sand. Improve water quality and clarity for a refreshingly clean spa environment, enhances your overall pool or spa experience BulletPoint4 : 【Long Service Life】Unique trilobal structure fabric makes it easier to capture large volumes of contaminant. It is also easy to clean to recondition the filter. This filter lasts for 1-2 years when proper maintenance is performed. To improve the efficiency of the filter, we recommend cleaning the filter cartridge once a month depending on the usage BulletPoint5 : 【Package Include】You will receive 1 pack 35 sq. ft. spa filter cartridge, Length: 14", Outside Diameter: 6-3/8", Top & Bottom Opening Diameter: 2". Please let us know if you have any questions or concerns regarding pool filter cartridge Color : white ExternallyAssignedProductIdentifier1 : 0810151302874 ExternallyAssignedProductIdentifier2 : 810151302874 IsAssemblyRequired : 1 ItemName : PWK35B Spa Filter Compatible with Hot Springs Limelight Series, Filter Cartridge Replaces Watkins 1642301-1 78161 78286 Filbur FC-3921, 35 Sq.Ft Trilobal Fabric Filter ItemPackageDimensions_Height : 7.1 inches ItemPackageDimensions_Length : 16.7 inches ItemPackageDimensions_Width : 3.5 inches ItemTypeKeyword : swimming-pool-cartridge-filter-inserts Manufacturer : Pwk35b Material : pleat material, end caps, and max flow cores ModelName : Pwk35b ModelNumber : Pwk35b NumberOfBoxes : 1 NumberOfItems : 3 PartNumber : Pwk35b PowerSourceType : ac ProductDescription : PWK35B Spa Filter Compatible with Hot Springs Limelight Series, Filter Cartridge Replaces Watkins 1642301-1 78161 78286 Filbur FC-3921, 35 Sq.Ft Trilobal Fabric Filter ProductSiteLaunchDate : 2025-03-26T17:39:15.467Z SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 2.98 UnspscCode : 40161505