25 sq. ft. top load.
4CH-950 replaces: Filbur FC-0173 UPC 645544001733. Pleatco PDO-UF25P2 UPC090164402543. OEM 1561-04, 74408-99. Unicel UPC 678285240109.
Commonly used in: Dimension One Spas, Saratoga Spas and others.
Unicel 4CH-950 Filter (4-5/8" W, 12" L)