Baleen Filters AK-7008 Pool Filter, White Media Area 75 sq ft, 8" OD, Open Hole: 2 1/16" Top, Open Hole: 2" Bottom, 13" Long, AK-7008 1 Year Warranty - Baleen Filters are made from Durable and Efficient USA Made Reemay Fabric - Washable Fabric Extends Your Filter's Life 75 sq. ft. 8000 Series Cartridge for California Cooperage Filter, replacement of Unicel C-8475, Pleatco PCS75N Baleen Filters Top: Open Hole: 2 1/16" Bottom: Open Hole: 2" Guaranteed Perfect Fit - Extremely Durable - Wash & Reuse - Most Energy Efficient - Withstands High Pressures & Temperatures