The Hayward C120-RE R is a compatible replacement for the following spa filters:
The Hayward C120-RE - Comp. Pool Filter Cartridge is a pool filter cartridge constructed with 12 square feet of media area for the purification of swimming pool and spa water. This spa filter replacement measures 4 5/8" x 11 7/8" with 2 1/8" Open top and bottom holes. With this compatible Hayward pool filter you will be able to reduce contaminants in water.