Description About this item ECONOMICAL AND EFFICIENT: The Hayward Perflex Extended Cycle Diatomaceous Earth Pool Filter provides sparkling, crystal-clear water at an economical price QUICKER CLEAN: Removes even the smallest particles the first time through for a quicker clean PATENTED TECHNOLOGY: Patented Flex-Tube system efficiently reuses diatomaceous earth powder and dirt mixture to form fresh cleaning surfaces EASIER TO USE: Easy-to-access clamp assembly for simplified service and maintenance From the manufacturer Pictured Above: EC65A About HAYWARD For over 80-years, Hayward has been helping pool owners enjoy the pleasures of pool ownership by manufacturing cutting edge, technologically advanced pool equipment worldwide. Our goal is that at the end of the day, your only concern is to turn your equipment on and off. Perflex D.E. Pool Filters Basic modular Filter Perflex extended-cycle diatomaceous earth (DE) filters provide superior water clarity and extended filter cleaning cycles without requiring backwashing. Clean pools fast, removing particles as small as two microns the first time through Patented Flex-Tube design gives longer cycles between cleaning because the same D.E. filter powder is used over and over Unique bump mechanism allows DE flex tubes to instantly and uniformly clean themselves of dirt and DE filter media Experience Crystal Clear, Sparkling Water Perflex Extended-Cycle diatomaceous earth (DE) filters provide crystal clear, sparkling water. Perflex has set the standard in swimming pool filtration by incorporating the Flex-Tube design in combination with diatomaceous earth. The result is superior water clarity, extended filter cleaning cycles – and no backwashing required. Pictured Right: EC40AC. Model EC40AC EC50AC EC65A EC75A Effective Filtration Area (Ft. Sq.) 20 Ft. 25 Ft. 27 Ft. 40 Ft. D.E. Required 4 Lbs. 5 Lbs. 6 Lbs. 7 Lbs. Dimen. Width 16″ 13 1/2″ 21″ 21″ Dimen. Height 26 1/2″ 31 3/8″ 31″ 31″ Product Description The Hayward Perflex Extended-Cycle Diatomaceous Earth Pool Filter produces clear, sparkling water at an economical price for above-ground, on-ground and small in-ground pools. A reliable solution that sets the standard for pool filtration, Perflex incorporates both exclusive Flex-Tube technology and diatomaceous earth, the most effective filter media available. The result is superior water clarity, extended filter cleaning cycle without the need for backwashing.