Mr. Heater Propane Blue Flame Heater 20,000 BTU #MHVFB20TBLP
Product Review (submitted on October 18, 2013):
I bought this heater for my little cabin 14' x 16' = 224 qft'. It's rated for 600qft'. It has 5 settings and I keep it set on 2 ( very comfortable) I just open two windows a 1/4" for venting. I replaced the inlet elbow fitting because it looked cheep and didn't want any problems, all in all the heater works great. I'm very satisfied with my purchase.