Aprilaire #4655 Manual Humidistat
The Aprilaire 4655* manual humidifier control is designed for low voltage (24v) control of humidifiers in central heating and air conditioning systems. This humidistat can be wall or duct-mounted. Includes plenum cutout template (4 5/32" X 2 7/16"). For duct mount, locate at least 6" upstream of humidifier, humidifier bypass ductwork, or fresh air intake ductwork.
*Special Order-Ship time is 2-3 days after the order is placed