Typical of Remington, safety's built in with an oxygen depletion sensor. This simple-to-install heater also features piezo ignition and easy-to-use manual temperature controls. Heat things up with Remington.Wall- and floor-mounted options included. Automatic low oxygen shut-off system (ODS). Please check local and state codes to determine if vent-free heaters are permitted before purchasing. I will allow 48 hrs. If you are unable to pay within that time please contact me. If you are outside of Canada please clearly mark the item as "RETURN". Please use postal service and NOT couriers if possible. _gsrx_vers_1292 GS 8.3.6 (1292). The item "Remington 18000-BTU Wall/Floor Natural Gas Vent-Free Infrared Heater" is in sale since Wednesday, November 24, 2021. This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Heating & Cooling Appliances\Space Heaters". The seller is "zyla999" and is located in London, Ontario. This item can be shipped to United States.