Anyone? Sounds like it will work. Mabye if you use a fire retardant dynamat or something?? I don't have room in my box for the fan so I'm looking for ways to keep it quite.I've read that you can run your duct fan in an insulated box in order to keep noise levels down. Does this work? Is it safe to do?don't the fans heat up at all? Anybody know, or currently do this.