I put 2 rv roof vents on the roof,2 tiny widows on the sides and 1'' of insulation on the inside.My trailer is 6'x12' with tandum wheels.Keep the propane mounted on the outside.I put a table mount from a junked custom van on the floor and have the small table with cup holders in it from the van and made a larger one for eating on .On one tripout west with 4 guys we hunted 2 states for a total time of 28 days and hauled 12 big game animals home to Pa. with it .Everyone must bring a tent to unload their own stuff into it when we park.Other wise you wouldn't be able to get in it.I call mine spike ,base camp is here in s.w. pa. It can be -10 in the camper in the morning but by the time the coffee perks it's up to 50 or 60 degrees in there.