Mr. Heater Natural Gas Blue Flame Heater 20,000 BTU #MHVFB20TBNG
Product Review (submitted on November 6, 2012):
usinf to help with a drafty old house. have a gas stove fireplace for the den and put this in the basement. so far the furnace hasnt even turned on. down below freezing a couple times now and still nice and tosty.