Pleatco PCC130 Replacement Cartridge for Pentair Clean and Clear Plus 520, 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 7" outside diameter, 3" inside diameter and 32" length Made in the USA