Pool Filter Replaces Unicel 7CH-40, Pleatco PCS40, Filbur FC-0435 Filter Cartridge for Swimming Pool and Spa Media Area 40 sq ft, 7" OD, Semi Circular Handle Top, Open Hole: 1 1/2 Bottom, 9 3/4" Long, AK-9022 1 Year Warranty - Baleen Filters are made from Durable and Efficient USA Made Reemay Fabric - Washable Fabric Extends Your Filter's Life 40 sq. ft. Top Load Filter for Lifestyle Spas (Canada), Maax of Arizona, Vita, replacement of Unicel 7CH-40, Pleatco PVT40P Baleen Filters Top: Semi Circular Handle Bottom: Open Hole: 1 1/2 Guaranteed Perfect Fit - Extremely Durable - Wash & Reuse - Most Energy Efficient - Withstands High Pressures & Temperatures