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Aprilaire #4640 Scale Control

Aprilaire #4640 Scale Control

Item SKU: APRILAIRE4640O

MFG ID: UAPRILAIRE4640O | UPC:




The Aprilaire 4640 is a humidifier insert that keeps your humidifier system working at its best. This product works with your 500 series model humidifier and will keep mineral scale out of the water. This will prevent build up and other contaminants from being released into the air you breathe.

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