Hayward Perflex 25 Sq Ft DE Pool FilterThe Hayward W3EC50AC Perflex Extended Cycle D. E. Pool Filter is designed to provide crystal clear water for both in ground and above ground pools. It utilizes a patented Flex Tube system to capture particles as small as one micron without the need for frequent backwashing, making it efficient and economical for pool maintenance. Suitable for pools up to approximately 12,000 gallons, this filter enhances water clarity while extending filtering cycles.