Description Shutter mounted exhaust fans are widely used for ventilating warehouses, stores, factories, workshops, greenhouses and farm buildings. Shutter frames with prepunched mounting holes allow for easy installation.
All ventilators are UL 705 Standards listed
7" to 24" diameter aluminum blade propellers; 30" and 36" diameter galvanized steel blade propellers; 7" to 24" diameter are speed controllable
Heavy duty guards have gray polyester coating to resist corrosion