4-Pack C4030 Pool Filter Cartridges Replacement for Hayward SwimClear C4030, C4025, C4020, Replace Hayward CX880XRE, Pleatco PA106, Unicel C-7488, 425sq. Perfect Match: Compatible with Hayward SwimClear C-4030/C-4025/C-4020 Pool Filter. Replacement for Hayward CX880XRE, Pleatco PA106/PA106-4/PA106-PAK4, Unicel C-7488/C-7488-4, Filbur FC-1226/FC-6430, Pure N Clean PC-1226/PC-6430 and more. All manufacturers’ names and part numbers are used for compatibility information only. NSF/ANSI 50 Certified: Tested and certified by NSF International against NSF/ANSI 50 for the use of safe materials. The trilobal pleated design captures 3x more debris than regular fabric, efficiently trapping leaves, hair, sand, and oils for cleaner water. With an outer diameter of 7”, inner diameter of 3” and a height of 25-1/2”, c4030 pool filter cartridges can be easily installed in your filter without worrying about leaks or compatibility issues. Extremely Enduring: C4030 pool filter cartridge features spunbond polyester and a strong inner core, making it capable of withstanding high-pressure water flow and enduring enough to be a worthwhile investment for your pool. Economical Pool Maintenance: Regularly cleaning and reusing the filter cartridge is a simple way to minimize water usage. We recommend cleaning the cartridge monthly to maximize its effectiveness and ensure a clean swimming experience.