Blue Wave 22-Inch Sand Filter System with 1-1/2 HP Pump for Above Ground Pools Easy assembly and efficient performance; 24,000 gallon turnover in 8-hrs; Molded one-piece polyethylene tank is tough and corrosion proof Pump and filter are perfectly engineered to provide optimum flow rates that promotes clean water quality High efficiency pump lowers system cost and ensures years of quiet operation Extra large hair and lint pot for easy cleaning; Requires 220-lbs sand (not included) Not legal for sale in California