This Replacement filter cartridge replaces Unicel # C-7488, Pleatco # PA106, Filbur # FC-1226 and complies with the OEM # CX880XRE. It handles the top load of 106 sq ft and is the most suitable for Hayward Super-Star-Clear C4000S, SwimClear C4020, Super-Star-Clear C4000, SwimClear C4025. This 25 1/2 inch long and 7 inch wide filter cartridge has 3 inch holes both at top as well as bottom. It is made of top quality materials and very easy to install.