Pleatco PA50SV-PAK4 Filter Cartridge for C-470 PRC 50 - Pack 4 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 Height : 14 3/8" ; Diameter : 7" with a 3" center opening. Made in the USA