Baleen Filters 150 sq. ft. Pool Filter Replaces Unicel C-8416, Pleatco PWWPC150B-4, Filbur FC-2576-Pool and Spa Filter Cartridges Model: AK-70019 Media Area 150 sq ft, 8 15/16" OD, Open Hole: 4" Top, Open Hole: 4" Bottom, 28 3/16" Long, AK-70019 1 Year Warranty - Baleen Filters are made from Durable and Efficient USA Made Reemay Fabric - Washable Fabric Extends Your Filter's Life 150 sq. ft. 8000 Series Cartridge for Sta-Rite PXC-150, Waterway ProClean 150, replacement of Unicel C-8416, Pleatco PWWPC150B-4 Baleen Filters Top: Open Hole: 4" Bottom: Open Hole: 4" 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.