Hayward Perflex W3EC40AC 20 Sq Ft Above Ground Pool DE Filter

The Hayward W3EC40AC Perflex Extended-Cycle 20 Sq Ft D.E. Filter cleans pools fast while removing particles as small as one micron the first time through. Using its patented Flex-Tube design, the Perflex gives longer cycles between cleaning because the same D.E. filter powder is used over and over. On top of that, the Perflex cleans without backwashing, saving hundreds of-Gallon of treated pool water. This filter is an exceptional value as a replacement filter or new pool installations.