Using infrared heating technology, objects are warmed first similar to how the sun heats & feels. This Infrared Wall Heaters burn with 99.9% efficiency, and operates on Natural Gas only. Not for sale in California or Canada.Check your local regulations on installation restrictions and requirements. DEPENDABLE: Ideal for emergency or daily supplemental use. ECONOMICAL: Cut heating bills by warming only occupied areas. COMFORT: Manually adjust the heat setting to your desired temperature. SAFE: Built-in oxygen depletion sensor (ODS) immediately shuts down the heater if carbon monoxide or lack of oxygen is detected. CONVENIENT: One continuous press of the battery assisted igniter makes ignition quick & effortless. VERSATILE: Includes all necessary hardware & bracket for wall mounting. Natural Gas Ready (Fuel conversion not permitted) Infrared Technology works by radiating heat to warm objects first - Similar to the sun 6,000-30,000 BTU's/hr variable heat output for up to 1,000 sq. Variable control knob offers the most customizable heat settings LOW - 6,000 BTU MED - 18,000 BTU HI - 30,000 BTU No electricity required allows for reliable back-up heating incase of an emergency situation. Assembled Product Dimensions (L x W x H). 28.07 x 10.51 x 24.09 Inches. This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Heating & Cooling Appliances\Space Heaters". The seller is "liangzai3" and is located in this country: US. This item can be shipped to United States.