The Master Flow 2 Speed Whole House Fan Control Switch is an on/off wall switch designed for easy control of your whole house fan. This product features speed control capabilities, making it convenient to adjust the airflow in your home. The white plastic switch is lightweight at .5 lbs and has dimensions of 4.5 inches in height, 3 inches in width, and 1.56 inches in depth. Upgrade your home with this efficient and durable fan control switch.