WhisperThin DC Exhaust Fan, designed for efficiency and quiet operation in medium to large rooms like bathrooms, laundry rooms, and more. With its Pick-A-Flow Speed Selector offering 80 or 100 CFM airflow options, this fan ensures optimal performance tailored to your ventilation needs. Powered by DC-ECM Motor Technology, it reduces energy costs and boasts a long lifespan while being environmentally friendly. Operating at less than 0.5 sones at 80 CFM and 1.1 sones at 100 CFM, it quietly eliminates humidity, mold, and pollutants from your space. Easy to install with an included L-Shaped bracket for 2 x 4 stud construction and a 4 In. oval duct. It complies with Energy Star, HVI, California Title 24, and Washington VIAQ standards. Backed by a 6-year warranty on the motor and 3 years on parts, this fan delivers efficient ventilation and superior indoor air quality for years to come.