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Pentair Spa Pool Replacement Filter Cartridge (179135) cgairsystems Part number 9920 400684 is included Part number 9920 400684 is included for easier cross reference during ordering and maintenance Supports faster and more organized professional service The Pentair 179135 replacement filter cartridge is designed for compatible spa and pool filter systems where a fresh cartridge element is needed Designed for compatible spa and pool filter systems
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