DESCRIPTION:
The Aprilaire 4665 Is A Manual Humidifier Control Is Designed To Be Used With Low Voltage (24 VAC) Service To Offer Control Of The Humidity In Your Home.
- To Be Installed On Your Cold Air Return Duct In Order To Accurately Measure The Humidity And Send Power To The Humidifier To Be Run When Necessary. Can Be Alternately Installed On An Inside, Centrally-Located Wall In The Home.
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