Hayward Perflex EC40C92S Above Ground DE Swimming Pool Filter System EC40AC. Hayward Perflex EC40 provides crystal clear, sparkling water at an economical price, it the Perflex D. Filters have been proven reliability, and energy savings over many years, Perflex has set the standard in swimming pool filtration by incorporating the patented Flex-Tube design in combination with D.Filter powder the most efficient dirt remover known for pool filtration. The result is superior water clarity, extended filter cleaning cycles and no backwashing required. (diatomaceous earth), the most effective filter media available. Patented Flex-Tube system efficiently reuses D. Powder and dirt mixture to form fresh cleaning surfaces. Exclusive bump handle activates the Flex-Tubes, causing them to instantly purge themselves of dirt and powder. Combination diffuser and lower mixing chamber specifically designed to produce a uniformed coating of D. Dimensions: 16" W x 26 ½" H. Effective Filtration Area: 20 sq. The item "Hayward Perflex EC40C92S Above Ground DE Swimming Pool Filter System EC40AC" is in sale since Friday, February 21, 2014. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Pool Equipment & Parts\Pool Filters". The seller is "savemoreonpoolsupplies" and is located in Tonawanda, New York. This item can be shipped to United States.