Mr. Heater 30,000 BTU Propane Blue Flame Vent Free Heater MHVFB30TBLP
Product Review (submitted on November 15, 2013):
The heater works great. I use it for my greenhouse. The only problem is that I have the thermostat turned down all the way and it gets too hot sometimes. One time it got up to 89 I do not think it should get that high when the thermostat is turned to the lowest level!