Check the listing for details. 940CFM 12" Wall Mounted Shutter Exhaust Fan Aluminum High Speed With Controller. Color: Silver, Condition: New, Made in United States. Listed at 50.97 USD. Fitment: The Power Shutter Exhaust Fan Is Perfect For Removing Excess Heat Moisture And Unpleasant Odors From Virtually Any Commercial Location Including Restaurants Factories Warehouses Barns And Greenhouses. This Fan Features Aluminium Blades Automatic Shutters That Open And Close In Tandem With The Operation Of The Fan. The Completely Enclosed Motor Is Thermally Protected And Permanently Lubricated. The Fan Comes Fully Assembled Out Of The Box Only Installation Required Is The Electrical Hardwire. Description： -Applications: This 12 Inch Shutter Exhaust Fan With Automatic Shutters Can Help Replace Your Ac Unit By Cooling Your Garage, Attic, Greenhouse Shop Or Chicken Coop. .