Well, It's not really a closed space (although MANY people cook & heat their house with propane). 3 sides have a 15" full length opening & the back is 1/2 open. There is plenty of fresh air flowing in the box (at head height). The heater also has a "oxygen shut-off" sensor that will turn the heater off if levels are dangerous. It's not really like a sauna, but will keep ones hands warm.
Let's see somemore pictures!
ORIGINAL: bigtim6656
ya no offense to but the propane in a closed space might kill you
ORIGINAL: virginiashadow
"Yes, with our propane heater
. The stand overlooks a field with 300+ yard shot opportunity. The box offers rifle support."
I am not looking at a 300 yard shot opportunity or to sit inside a propane filled blind....no offense.