Plan on putting it over your head. I put my vent toward the rear of my trailer and regret it. If it was two or three feet further to the front the venting of our breathing would be lots better. We have a set of hooks to hold the doors open a couple of inches and this is the venting that keeps us comfortable at night. Otherwise our heads are up in a cave and the vent and Windows are at our feet. Learn from my mistake.
Tt