Invent Series, 110 CFM, Single Speed Bath Fan , 3,0 Sones, Versatile Housing Platform, Allows For Easy Installation In Both Construction & Retrofit Applications, Foldable Mounting Ears For Easy, Room Side Replacement, 4" Duct Connector Mounts From The Inside Of The Housing & A Damper Technology, Improving Air Tightness Scores, 10" x 9-1/4" x 5-3/4" Housing.