Mr Heater F299721 Blue Flame 20000 Btu Natural Gas Vent Free. Mr Heater Blue Flame 20000 BTU Natural Gas Vent Free heater. Blue Flame 20,000 BTU Natural Gas Vent Free heater 20,000 BTU per hour For use with Natural Gas Heats up to 500 sq. 020 MCF Electricity RequiredNo Maximum Elevation (Ft)4500 Weight (Lbs)26.75 ModelMHVFBF20NGT OversizedNo Length23.75 Width11.25 Height27 DisclaimerCheck local code for permitted uses.Not for use in bathrooms, bedrooms, or recreational vehicles. 4,500ft high altitude restriction. Propane cylinder must remain outdoors. UseSupplemental heat in cold rooms, Additions, Sun rooms, Cabins ThermostatYes Safety Tip-Over SwitchNo Fuel TypeNatural Gas Heat TypeBlue Flame Oxygen Depletion Sensor (ODS)Yes High Limit Safety Shut-off (HLS)Yes Indoor SafeYes IgnitionElectronic Hose & Regulator IncludedNo. This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Heating & Cooling Appliances\Space Heaters". The seller is "ceshowroom" and is located in this country: US. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech Republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, Korea, South, Indonesia, Taiwan, South Africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi Arabia, United Arab Emirates, Qatar, Kuwait, Bahrain, Croatia, Republic of, Malaysia, Brazil, Chile, Colombia, Costa Rica, Panama, Trinidad and Tobago, Guatemala, Honduras, Jamaica, Antigua and Barbuda, Aruba, Belize, Dominica, Grenada, Saint Kitts-Nevis, Saint Lucia, Montserrat, Turks and Caicos Islands, Barbados, Bangladesh, Bermuda, Brunei Darussalam, Bolivia, Ecuador, Egypt, French Guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman Islands, Liechtenstein, Sri Lanka, Luxembourg, Monaco, Macau, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Vietnam, Uruguay.