Dayton ceiling ventilators are designed to decrease humidity for quickly clearing fogged mirrors and keeping bathroom moisture to a minimum level. They feature acoustic insulation that absorbs sound, providing silent, high-performance ventilation of bathrooms, utility rooms, meeting rooms and offices. These UL and C-UL Listed fans come with thermally protected motor and external electrical access, decreasing installation time. Choose from a range of these ceiling ventilators, available in housing heights of 9, 11.25 and 14.5 inches.