Whether you're building a new home with a master luxury bath or replacing an old, noisy exhaust fan during home improvement, an MS Series Bathroom Fan is an impressive choice with contemporary style. A rugged galvanized steel housing contains a powerful ball-bearing motor and a balanced, forward-curved blower wheel to efficiently ventilate your space and reduce moisture or odors while offering an exceptionally quiet performance not only in a bathroom, but also in a powder room, laundry room, or other utility room. Our vent fan uses a side tab mounting installation method and features a plastic discharge collar with backdraft damper for easy attachment to a 4 in. diameter duct.