This replacement pool filter cartridge provides superior water flow and improves pool water clarity. Smaller particles can be removed during pool/spa water turnover. This provides an easy-to-clean option you can simply rinse it off with a garden hose or tube. 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 Cartridge is easy to clean Helps maintain clean and clear water