The UNICEL 4CH-50RA R replaces the following pool and spa filters:
The Unicel 4CH-50RA Comp. Replacement Pool Filter improves pool and spa water quality with its pleated media construction and built-in 50 square feet of media. This pool filter cartridge measures 4 5/8" in diameter and 14 3/4" in length, and utilizes Microban technology to reduce odors and fight the growth of bacteria and black mold. This Unicel pool filter, also known as the Filbur FC-0151M, has a 1 1/2" MPT bottom style and a Closed top hole with a Crescent Handle top style.