Auxiliary， supplementary or primary heat source in factories， stores， garages， basements， warehouses， public buildings， service stations， stock rooms， offices， workshops， toll booths， large or exposed areas or additions. Heater comes equipped with ceiling mounting bracket for horizontal or vertical flow mounting or any position in-between. Built-in single pole thermostat adjusts from 45 F (degree Fahrenheit) to 135 F. Automatic control delays fan action until heating element is warm. When thermostat is satisfied， fan continues to operate until heating element is cool. By preventing circulation of cold air and expelling excess heat， comfort level is raised and and component life is extended. A high level cutout automatically shuts off current in event of overheating and reactivates the heater when temperature returns to normal. 6 Ft. minimum mount height.