Honeywell Demineralization Cartridge(HDC500PDQ)
Product Type: Demineralization Cartridge Application: use of the Pure Guardian Demineralization Cartridge can extend the life of a humidifier Attaches to inside of tank Forces all water to pass through cartridge Reduces calcium in the water which can cause white dust before it is distributed into the air Replace every 20 - 30 fillings Replacement for new humidifier HUL 570B
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