Baleen Filters 150 sq. ft. Pool Filter Replaces Unicel C-9415, Pleatco PAP150-4, Filbur FC-0687-Pool and Spa Filter Cartridges Model: AK-8004 Media Area 150 sq ft, 10 1/16" OD, Open Hole: 6" Top, Open Hole: 6" Bottom, 31 1/8" Long, AK-8004 Baleen Filters are made from Durable and Efficient USA Made Reemay Fabric - Washable Fabric Extends Your Filter's Life 150 sq. ft. 9000 Series Cartridge for Clean & Clear Plus, PacFab, Predator Filter, replacement of Unicel C-9415, Pleatco PAP150-4 Baleen Filters Top: Open Hole: 6" Bottom: Open Hole: 6" 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.