The Coleman 100521 R is a compatible replacement for the following pool water filters:
The Coleman Spas Comp. 100521 Spa Filter Cartridge is a pool filter replacement that improves the quality of swimming pool and spa water. This pool filter cartridge measures 7" x 9.75" and features a 2" MPT bottom style. Boasting 40 sq. ft. of media area, this compatible Coleman Spas filter has a Crescent Handle top style and Closed top hole.