Pleatco PJ160-4 Replacement Cartridge for Sherlock 160, Jacuzzi Brothers, 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 24-5/16-by-6-inches with handle Made in the USA