The Pleatco PFAB100 Swimming Pool and Spa Replacement Filter Cartridge is an advanced point bonded filtration fabric designed for use in both above ground and in ground pools. With dimensions of 7 7/8" width x 22 1/8" height with top and bottom openings of 3 1/16", this filter cartridge is suitable for replacing Unicel C-7699 and Filbur FC-1950 models. The Pleatco brand ensures high quality and reliable filtration for maintaining clean and clear pool or spa water.