ProCom Dual Fuel Vent-Free Blue Flame Garage Heater - 30,000 BTU, Model# MD300TGA Patented technology burns either natural gas or propane fuel orks with the ProCom Manual/Automatic Thermostat Blower, Item# 173957 (sold separately) Oxygen depletion sensor for safety ot for sale in California or Canada heck your local regulations on installation restrictions and requirements