Air King AS70 Advantage Exhaust Fan 70 CFMProduct Description The Air King AS70 Advantage Series Exhaust Bath Fan is an economical way to provide ventilation at moderate sound levels without sacrificing style and function. This exhaust fan is ideal for smaller rooms such as bathrooms powder rooms and utility rooms. With a speed setting operating at 70 CFM at 4. 5 Sones the AS70 is suitable for bathrooms up to 65 square feet and other rooms up to 85 square feet. This exhaust fan comes complete