I chose this fan because it was the best one I could afford. It is now installed in my 25 by 25 foot garage, in the wall behind the workbench. Anyone who has ever stunk up a garage with fumes or overspray knows that a normal house fan will not do the job. This fan is not beautiful, and it is not silent... but the motor alone weighs more than most complete fan assemblies. It has 2 speeds: fast, and hold on to your hat! :) Sometimes I spray paint out there and this thing does a much much better job with the stinky cloud of overspray than the 2 window fans it replaced. The shutters shut tight all by themselves when it is shut off, and they are edged with rubber so they seal smoothly. While it's running I can actually see the overspray moving out, clearing the whole garage so fast that it pretty much stays clear if you turn on the fan before you start. A great addition to any mechanic or handyman's shop. Not for sissies, however... :)