Back To Wall-Fireplace Features Infrared Quartz Heater Independently Lab Tested And Proven To Warm Rooms Up To 1,000 Sq. Ft By Intertek Energy Saving Led Spectrafire Flame Effect Can Be Used With Or Without Heat For 4 Seasons Of Enjoyment Large Viewable Area: 37"W X 11.7"H Touch Screen Function Indicator Indicator Disappears When Not In.