I am looking for a source of a decent quality roof mounted vent fan for bathroom venting. I had one at the old house made by Broan/nutone. Only need around 50 cubic feet per minute. use 3-4 inch duct. Keeps the noise away from the ears. I do not want the massive 6" kitchen or attic fans that are loud, too many CFM cause wind noise as well as motor noise..
Bill D