PAS35P, 5CH-35, FC-0300 Replacement Cartridge Measurements: Diameter: 5 7/8" Length: 7 3/4" Top Hole Dimension: Handle Bottom Hole Dimension: 1 1/2" MPT (Male Pipe Thread) Replaces: Unicel 5CH-35, Filbur FC-0300 Description: Fits Elite Spas (Coleman) 35 sq. ft. Elite Spas by Maax