The Marquis 370-215 R is a compatible replacement for the following spa filters:
The Marquis Spas 370-215 Comp. Pool Filter Cartridge is a pool water filter built with premium media and 35 sq. ft. of media area. This compatible Marquis Spas filter measures 5 3/16" x 11 7/8" and greatly improves the quality of water in swimming pools and spas. In addition, this spa filter replacement has a Closed top hole with Loop and 1 5/8" Open bottom hole.