The UNICEL 4CH-24RA R replaces the following pool and spa filters:
The Unicel 4CH-24RA Comp. Replacement Pool Filter measures 4 5/8" x 9 3/4" with 25 square feet of media area. This pool filter cartridge, also known as the Filbur FC-0131M, has a Closed top hole and 1 1/2" MPT bottom style, as well as a Crescent Handle Blue top style. This Unicel pool filter improves pool & spa water quality through Microban technology, which fights against bacteria, odors, and mold growth.