Pentair 25021-0200S Small Inner Cartridge Replacement Sta-Rite System 3 SM-Series S7M120 Pool and Spa Cartridge Filter
This small inner cartridge is designed to use with Pentair Sta-Rite System 3 SM-Series pool and spa cartridge filter model S7M120. 100-square feet filtration area. Measures 11-inch length by 30-1/2-inch height by 11-inch width.