Safety Quartz Heater, 3 Beam Contact Sensor, 4 Hour Safety Timer, Tip Over Protection. Glowing elements emit infrared light for sun-like radiant heat SafetyMax 3-beam sensor; MaxFlow fan pushes heat out into the room 4-hour timer; auto safety shut-off; tip-over protection; carry handle Measures 13-1/2 by 9-1/5 by 18-2/3 inches; 6-year limited warranty