The Sta-Rite TX100 R is a compatible replacement for the following spa filter cartridges:
The Sta-Rite TX100 Comp. Pool Water Filter Cartridge is a pool filter replacement ideal for purifying spa and pool water. Through 50 square feet of media area, this compatible Sta-Rite filter maintains fresh and clear water. This pool filter measures 7" x 19 3/8" with 3" Open top & bottom styles.