Hayward EC50C93SFT Perflex Extended-Cycle EC50C DE Filter System with 1-1/2-HP Power Flow Matrix Pump and Micro Timer Perflex EC50AC DE filter system comes with power flow pump It cleans pools fast, removing particles as small as two microns the first time through Includes 1-1/2-inch drain plug, base, hose kit and micro timer Its patented Flex-Tube design gives longer cycles between cleaning because of the same D.E. filter powder is used over and over This filter system has 1-1/2-horsepower flow rate