The 8-1/2" 80 SqFt Hayward® StarClear II C800 and C1500 Pool Cartridge Filter removes particles and debris from water, allowing for a cleaner environment. It features a strong injection-molded core. Break resistant bands are strategically placed to support the media and maintain pleat spacing. Robust end caps are made from a time-tested chlorine and mildew-resistant urethane system.