The Rainbow 17-2653 R is a compatible replacement for the following spa filter cartridges:
The Rainbow 17-2653 Comp. Pool Filter Replacement is a pool filter cartridge with a Closed Knob Handle (top style) and 2 1/8" Open bottom style. This compatible Rainbow filter effectively purifies your swimming pool or spa's water through the use of quality media and 25 square feet of area. This spa filter replacement measures 4 15/16" in diameter and 13 5/16" in length.