The UNICEL 4CH-50 R replaces the following pool and spa filters:
The Unicel 4CH-50 Comp. Pool & Spa Filter Cartridge improves the quality of your pool and spa water through pleated media and 50 square feet of media. This pool filter cartridge measures 4 5/8" in diameter and 14 3/4" in length. This Unicel pool filter, also known as the Filbur FC-0151, has a 1 1/2" MPT bottom style and a Closed top hole with a Crescent Handle top style.