It it is too hot inside leave a 4 inch gap around the bottom.Roy, you pitched your tent cloth perfectly in that photo. Having been treated, is the fabric at all breathable or does it get plenty hot in there on a warm day? I remember as a kid pitching a surplus olive drab canvas "pup tent" (Dad, infantry, always referred to it as "shelter halves"). We kids piled in there and thought it was so cool ... but it wasn't and we were generally steamed out of there in 10 minutes. This was in the torrid tropical heat of a summer in Tacoma, Washington.