I installed this in a bathroom vent to remove moisture after a shower. It moves less air than I expected, but it didn't really matter. The real problem is that the fan died within a week. It worked fine and the next day I didn't seem to hear the fan running, but when I checked later that day it was working fine. But a day or two later I climbed into the attic to double check. The fan was completely dead. There was power in the outlet, power in the motor, but it wasn't working. I recommend anyone watching this to choose something else.