Pool Filter Replaces Unicel 7CH-975, Pleatco PDO75, Filbur FC-0475 Filter Cartridge for Swimming Pool and Spa Media Area 52 sq ft, 7" OD, Semi Circular Handle Top, 1 1/2" Bottom, 10 1/2" Long, AK-9028 1 Year Warranty - Baleen Filters are made from Durable and Efficient USA Made Reemay Fabric - Washable Fabric Extends Your Filter's Life 52 sq. ft. Top Load Filter for 10 1/2" Long Dimension One, replacement of Unicel 7CH-975, Pleatco PDO75 Baleen Filters Top: Semi Circular Handle Bottom: 1 1/2" Guaranteed Perfect Fit - Extremely Durable - Wash & Reuse - Most Energy Efficient - Withstands High Pressures & Temperatures Pre-Filters allow for quicker water balancing with fewer chemicals. Washing a filter will extend its life &amp; clean filters use less energy. The Jet Brush makes this quick and easy. Scum Magnets prevent scum andoil from making it to the filter for fewercleanings.