The UNICEL 4CH-35 R replaces the following pool and spa filters:
The Unicel 4CH-35 Pool & Spa Comp. Filter Cartridge improves pool and spa water quality with its pleated media construction and built-in 35 square feet of media. This pool filter cartridge measures 4 5/8" in diameter and 16" in length. This Unicel pool filter, also known as the Filbur FC-0161, has a 1 1/2" MPT bottom style and a Closed top hole with a Crescent Handle top style.