Pleatco PA125 Replacement Cartridge for Hayward ASL Full-Flo C1250, C1500, 1 Cartridge (Discontinued by Manufacturer) 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 19-5/8-by-3-by-3-inches Made in the USA