VENTS GK150MA Wall-Through Ventilation Fan is designed for direct air extraction and room to room air exchange. It provides efficient ventilation for rooms up to 175 sq. ft. and for 510 sq. ft. garage space without the need to be connected to an air duct.Specifically designed impeller provides smooth movement resulting in quiet and efficient performance. Tough fan made of UV protected thermoplastic resin. Telescopic duct and supplied power cord makes installation easy. It features automatic shutters, which closes when the fan is off preventing backdraft and the infiltration of rain, insects etc.The most common applications are laundry room, bathroom, utility room and garage ventilation. GK150MA is effective in removing exhaust and toxic fumes released by chemicals, paints and cleaning products stored in the garage. Not only cools hot garages and helps to maintain constant temperature, but it helps to reduce humidity, prevents condensation with that protects the contents of your garage.Because the fan forces the hot air out of the garage and draws in cooler air from outside, it creates a more comfortable environment when using the garage as a hobby or workspace.