Push-button main control with 20 minute boost
Item Number: 45386
The VT20M intermittent Fan Control is designed to meet whole-house ventilation needs outlined in ASHRAE 62.2 Standard.
The model VT20M controller enables the exhaust fan to run at a pre-set speed for a pre-set portion of each hour, 24 hours a day. The high speed override button enables the fan to run at full speed for 20 minutes when needed, for example to vent steam from a bathroom.