Bathroom ventilation fan runs at 1.0 Sones, with newly upgraded motor to ensure performance and centrifugal impellers to reduce noise and help control the quality of the air, Ideal for spaces up to 100 sq. ft. Bathroom exhaust fans make it easy to freshen the air. Install a bathtub exhaust fan where you need it most - in the ceiling! An exhaust fan in the ceiling ensures no steam or foggy mirrors after a shower.