Hayward HCF7030C 700 Square Feet Polyester Commercial HCF Series Dual Quad Cluster Cartridge Filter HCF series dual Quad cluster commercial cartridge filter system provides heavy-duty, dirt-holding capacity Heavy-duty, tamper-proof clamp securely fastens tank top and bottom, noryl bulkhead fittings Filter exterior is molded from a glass reinforced copolymer material Effective 700-square feet filtration area, 150 GPM design flow rate, 50 PSI maximum working pressure Measures 26-inch diameter by 52-1/2-inch height