CONTINENTAL DYNAMICS (CD) LINEUP OF CORROSION RESISTANT EXHAUST FANS WITH SHUTTER ARE DESIGNED FOR PEAK PERFORMANCE IN A MULTITUDE OF COMMERCIAL, INDUSTRIAL, AND AGRICULTURAL APPLICATIONS; FROM FACTORIES, WAREHOUSES, GREENHOUSES, BARNS, INDOOR GROW ROOMS, AND MUCH MORE. THESE EXHAUST FANS ARE CONSTRUCTED TO RESIST RUST AND CORROSION. THE FAN GUARD IS MADE OF EPOXY COATED STEEL WITH A FIBERGLASS SHUTTER FRAME. FAN BLADES ARE MADE OF FIBERGLASS REINFORCED POLYPROPYLENE, AND THE MOTOR IS TOTALLY ENCLOSED AIR OVER WITH CLASS B INSULATION WITH PROVISIONS FOR DIRECT WIRING. UL, CUL LISTED AND CONFORMS TO OSHA AND UL507 STANDARDS. ALL FANS FEATURE THERMAL PROTECTION AND CAN BE OPERATED VIA THERMOSTAT (SOLD SEPARATELY).