Yep. It is ridiculous how strong it is. it's 1/8" aluminum. I attached a picture to show the cross section of the main support (It's not very detailed, just a quick and dirty diagram). The triangle tube is made up of the outside sheet, and an inside sheet. The triangle runs the length of the camper, My guess is it could hold about 500 Lbs.The overhang section is stiff and strong enough to support the weight of two people without any sort of boxing framework? I'd be afraid of that crumpling. How thick is the aluminum?
Sorry, I left out the part about the aluminum spanning the distance. Hopefully the drawing below explains a bit better.3/4" ? no other support across the open span?