This 14-inch wall-mounted shutter exhaust fan works excellently to efficiently draw away surplus heat, trapped moisture, floating dust particles and unwanted unpleasant odors from nearly all residential and commercial premises. It fits a wide range of practical scenarios such as workshops, welding workshops, manufacturing factories, storage warehouses, livestock barns and plant greenhouses. Fitted with built-in automatic gravity shutters, the panels automatically open while the fan runs and seal tightly once the unit powers off. Its fully enclosed motor comes with reliable thermal overload protection and features long-lasting permanent lubrication to ensure steady, trouble-free long-term operation. Color: Silver. Material: Aluminum.