iLiving - 18" Wall Mounted Exhaust Fan

I purchased the variable speed Iliving fan model and also Iliving’s controller. The controller comes with a remote control that allows setting a desired temperature/humidity. The controller sets the speed in steps so the fan operates at lower speeds when temp/humidity is close to the set point. The fan is very well made and is supplied with decent instructions. Mounting is easy if you can provide an approximately 21 x 21 inch wall opening. As a few others have pointed out, the aluminum shutters are light and may remain very slightly open with fan off. The struts for the shutters are galvanized steel. I popped 3/8 disk magnets on the stunts so that as the shutters close, the magnets are attracted to the vertical rib in the center. The magnets help keep the shutters closed, but are easily overcome when the fan turns on. I also built a plywood box to hang over the fan in winter because the is a slight air gap around the outside of the shutters. The fan is efficient, fairly quiet, and easily keeps my garage attic comfortable even an hot days.