Cool-touch cabinet and grill, non-glowing heat element, automatic tip-over and multi-level, over-heat protection. Simple to use turn-dial thermostatic temperature control knob. Heat the room to a comfortable level and then turn the dial back until the heater shuts off. The heater will then maintain the temperature within 3 to 4 deg. Whisper quiet and has advance safety features to provide worry-free use. Compact design allows for out-of-way placement in home or office. Plugs into any household outlet, no batteries needed. Dimensions of 11-7/8 in H x 9-1/2 in W x 11-3/4 in D. Maximum output 5118 Btu/hr on high heat, 2559 Btu/hr on low heat or maximum temperature. Usage, large room 16 x 16 ft with 8 ft ceiling.