The Greenheck SP-A390-QD Ceiling Exhaust Fan is a ventilation unit designed to remove stale air, moisture, odors, and airborne contaminants from indoor spaces. Its motor-driven fan draws air from the room and exhausts it through connected ductwork, supporting continuous air circulation and ventilation. Commonly used in bathrooms, offices, commercial spaces, and other HVAC ventilation ... https://www.partshnc.com/sp-a390-qd-greenheck-ceiling-exhaust-fan