Exhaust ventilators feature rugged construction and are highly weather resistant. They can provide a steady exhaust of clean air, and are engineered to help reduce energy costs by circulating air, cooling attics, reducing overall air conditioner strain, and also help prevent heat and moisture buildup. Roof ventilators are designed to help exhaust contaminated air from kitchen range hoods up and away from the roof. Filtered supply ventilators help supply filtered make up air in commercial or institutional buildings. Some models feature a hinged hood to ease access to motor and drives for maintenance. We even have ventilators designed for solar or wind operation to help reduce your energy costs. Ventilators are suitable for use in a variety of industrial and commercial buildings, including warehouses, manufacturing facilities, foundries, and laboratories. Go to Grainger when you need roof ventilators, roof vents, roof exhaust fans, and accessories for your ventilation systems.