Originally Posted by nthole
If it's going to be cold and rainy and you're doing a pop-up, four sides with a flap for the door is a must. When the temps dropped to the 40's on us this April during a comp we'd have died if we didn't have this with us.
Cold and rainy outside...warm and dry inside. Kept a 12x12 above 70 inside when it was 40 outside.
That is a good heater, but at the Jack last year we were able to heat a 20x15 area (2x 10x15 popups) with this: