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The UNICEL 4CH-940RA R replaces the following pool and spa filters:
The Unicel 4CH-940RA Pool Filter Cartridge W/ Microban improves pool and spa water quality with its pleated media construction and built-in 40 square feet of media. This pool filter cartridge measures 4 5/8" in diameter and 15" in length, and features Microban technology that fights odors, bacteria, and black mold growth. This Unicel pool filter, also known as the Filbur FC-0177M, has a 1 1/4" SAE bottom style and a Closed top hole with a Crescent Handle top style.