Pleatco PJAN145-PAK4 Replacement Cartridge for Jandy Industries CL 580, Pack of 4 Cartridges Replacement filter for pool and spa cleaning systems. Diameter: 7 1/8 inches 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 32-7/8-by-3-by-3-inches. Filter Material-Pleatco Advanced Point Bonded Filtration Fabric. Material Weight-4 ounce/yd2 Made in the USA