The Sun Ray 5 x 13 R is a compatible replacement for the following pool filters:
The Sun Ray Spas Comp. Pool and Spa Filter Replacement is a pool water filter with Open top & bottom styles measuring 2 1/8". This compatible Sun Ray Spas filter cartridge offers 50 sq. ft. of media area for reducing contaminants in pool & spa water. In addition, this spa filter replacement measures 4 15/16" in diameter x 13 5/16" in length.