Hayward W3C3030 325 SqFt SwimClear™ Cartridge FilterThe Hayward SwimClear W3C3030 325 SqFt Cartridge Filter is designed to provide the most energy efficient flow, saving up to 2,500 gallons of water per year by eliminating the need to backwash. With a heavy duty dirt holding capacity and an extra long filter cycle, SwimClear filters are available in various sizes, including 225, 325, 425, 525, and 700 sq. ft. This 325 sq. ft. model operates at 50 psi with a flow rate of 122 gpm, ensuring superior