VEVOR 14 inch Shutter Exhaust Fan, Wall Mounted Attic Vent Fan with Variable Speed Controller, 1400 CFM, AC Motor, Heavy-duty Steel, Low Noise for Shed, Garage, Greenhouse Ventilation Cooling, Black
So how do shutters work? Let's say the fan is blowing the air and then there is a power outage. Will the shutters shut? Or if I turn it off using thermostat by killing the power outlet. Will the shutter still close?