Intex Type A Above Ground Pool Filter Cartridge Replacement 6-Pack of Type A Pool Filters Measures 4.125" diameter x 8" tall Fits the following pool filter pump models: Intex Model 02, Model 603, Model 635, Model 56635E, Model 637, Model 56637E, Model 12, Model 12R, Model 108R, Model 58623, Model 58631 FREE GIFT: 20" beach ball