The Alps Spas 50 R is a compatible replacement for the following pool filter cartridges:
The Alps Spas 50 Square Foot Comp Pool and Spa Filter reduces contaminants in swimming pool and spa water, and increases clarity. This compatible Alps Spas pool filter measures 4 15/16" x 13 5/16" and has 2 1/8" Open top/bottom styles. This pool water filter also offers 50 sq. ft. of media area for cleaner water.