The American Spa 6 X 8 R is a compatible replacement for the following pool filter cartridges:
The American Spas Comp Pool and Spa Filter Replacement is a pool and spa filter with 40 sq. ft. of media area and media weight of 3 oz. This pool filter measures 6" x 8 1/4", has a closed top hole with a Crescent Handle top style, and a 1 1/2" SAE bottom style. This spa filter purifies swimming pool and spa water.