This large outer cartridge is designed to be used with Pentair Sta-Rite System 3 SM-Series 21-inch pool and spa cartridge filter models S8M150. This cartridge has an increased number of pleats within the filter to ensure cleaner water free of debris. Measures 23.5-in diameter x 23-in tall; 259 sq. ft. filtration area.
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Item# : SPM13115280830
Model # : 25022-0203S
Product Overview:
Pool Heater Type:
Filter accessories