Product review (1 stars): DO NOT BUY
I bought this exhaustn fan in November of 2011. It started malfunctioning soon after.  This thing is a fire hazard.  It will turn itself on and change your settings like crazy. I had to disconnect the power to it for safety.  I have been in contact with the seller for months.  Its now December 2012! I have recieved no replacement parts. The seller is not to be trusted!!