I searched for an exhaust fan for our new, hot garage.  I did not believe some of the negative reviews and neither should you!  This fan fit right into our garage window and has been working every day for months!  Who cares if it is not made out of a heavy metal; you don't have to touch it except to turn it off and on.  It pulls and exhausts a lot of air and that is what it is supposed to do.  Don't make life more complicated then it has to be.  With all my searching, Amazon gave me the best deal and with my rewards from my Amazon credit card the fan cost me $54.  What's not to like when other stores wanted as much as $110?