Mr Heater F299731 Blue Flame 30000 BTU Natural Gas Vent Free Heater. The item "Mr Heater F299731 Blue Flame 30000 BTU Natural Gas Vent Free Heater" is in sale since Saturday, March 27, 2021. This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Heating & Cooling Appliances\Space Heaters". The seller is "westhillsparts17" and is located in Chatsworth, California. This item can be shipped to United States.