Pleatco PSD85-2002 Replacement Cartridge for Sundance Microclean, 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 14-by-2-3/16-by-2-inches SAE (Closed) with Slip Made in the USA