The Hayward EC75A DE Complete Pool Filter is a diatomaceous earth filter made of a porous substance that provides optimal filtration to remove particles as small as 2 microns. The EC75A produces an effective filtration area of 40 sq ft by using a 1.65-HP powerplant. The EC75A also never requires backwashing, saving you hundreds of gallons of pool water. This pool filter is recommended for in-ground pools only. Includes a 1-year warranty to give you peace of mind. 

Perflex Extended-Cycle D.E. filters clean pools fast, removing particles as small as two microns the first time through • Valve sold seperately • In-ground pools of all types and sizes • Exclusive bump handle activates the mechanism causing the Flex-Tubes to instantly and uniformly clean themselves of dirt and filter powder • Self-venting design automatically expels any air that may be present in the system • Proven, patented Flex-Tube filter elements efficiently reuse the filter powder and dirt mixture forming a fresh filtering surface • Combination pressure gauge and threaded inspection/service port is easy to read and remove when filter needs cleaning • Heavy-duty filter tank injection-molded of high-strength glass filled chemically coupled PPL for dependable, corrosion-free performance • Integral check valve prevents system backflow whenever pump is off