The RUH unit heater is small on price and big on heat. Theseheavy-duty units are well suited to situations where largeamounts of heat must be provided in wide open spaces suchas garages, workshops, commercial warehouses and constructionsites. This unit has a powerful output up to 4000 Wwith a voltage of 240/208. The RUH has adjustable louvers thatallow you to direct heat right from the source. With or without abuilt-in thermostat, it provides instant heat. Quiet, lightweightand easy-to-install with a universal wall or ceiling mountingbracket, this unit heater is everything you expect for less.Guaranteed productivity!