Well, i can say they are not a well built unit at all. They advertise insulation in the walls and floor of r7 I believe it was. It is R.5 if you are lucky. After maybe 20 sleeps I had to rebuild my bed over the truck cab because it was nearly sagged onto the roof of my truck. My girlfriend and I have a combined weight of 280Lbs. we are NOT big people. From the factory the propane lines leaked, the water lines leaked, the radio was miss wired, there was metal and wood shavings everywhere, faulty caulking and just careless installation everywhere. Upon rebuilding my bed area I found half of it had no insulation at all and the quality of the build was terrible, they are cheap for a reason. If you have a plan on keeping it, spend the money on one with an aluminum frame or an artic fox, bigfoot etc.