Dimplex DGWH4031G Garage and Shop Large 4000 Watt Forced Air, Industrial, Space Heater in, Gray/Black Finish Garage/workshop fan-forced heater with 4000-watt stainless-steel element 13,640 BTUs; automatic temperature control from 45 to 77 degrees F Fan delay uses residual heat for economical performance; auto safety shut off Attaches to wall/ceiling with included mounting bracket; heater swivels to direct heat Measures 11 by 7-2/7 by 9 inches. Heating Element- Fan is propeller type, accurately balanced and correctly pitched. 240V