Pleatco PA75SV Replacement Cartridge for Hayward C-570, SwimClear C3020, Super-Star-Clear C3000, C3000S Sta-Rite PRC 75, 1 Cartridge Replacement filter for pool and spa cleaning systems 50% open ABS free flow cores maximize water flow through REEMAY filter media Antimicrobial end caps resist chlorine degradation and provide support to filter material for a longer life span 19-3/4-by-3-by-3-inches Made in the USA