Specification Brand : RightFit BulletPoint1 : Right Fit Replacement Air Relief Valve for Hayward SwimClear Cartridge and Pro-Grid D.E. Filters. BulletPoint2 : Works with Hayward SwimClear and XStream model Cartridge Filters as well as Hayward Pro-Grid D.E. Filters. BulletPoint3 : Includes O-Ring BulletPoint4 : Comparable to Hayward Part Number CCX1000V. BulletPoint5 : ✅ Made from Heavy Duty Materials for Durability and Performance Color : Black ExternallyAssignedProductIdentifier1 : 0818775013749 ExternallyAssignedProductIdentifier2 : 818775013749 ItemDisplayDimensions_Height : 1.3 inches ItemDisplayDimensions_Length : 3.6 inches ItemDisplayDimensions_Width : 2 inches ItemDisplayWeight : 1 pounds ItemName : RightFit Replacement Air Relief Valve for Hayward SwimClear and Pro-Grid Filters WB744379 ItemPackageDimensions_Height : 0.9 inches ItemPackageDimensions_Length : 3 inches ItemPackageDimensions_Width : 2 inches ItemShape : Rectangular ItemTypeKeyword : swimming-pool-and-spa-replacement-parts ItemTypeName : Diffuser Replacement Manufacturer : Right Fit ModelName : Compatible with Hayward SPX2600B ModelNumber : WB744379 NumberOfBoxes : 1 PartNumber : WB744379 ProductDescription : Right Fit Replacement Air Relief Valve for Hayward SwimClear and Pro-Grid Filters is comparable to Hayward Part Number CCX1000V. SupplierDeclaredDgHzRegulation : not_applicable