Pleatco PCAL60-F2M Replacement Cartridge for Cal Spa Victory 60 SF Cartridge, 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 16-by-2-inches MPT with handle Made in the USA