When I get home this afternoon, I'll take measurements and pics of the cables, bunks and brackets to hold the bunks when they're folded. The curbside bunk is shorter, due to the oven cover sticking out into the bedroom area for our Sovereign
. Our frames are, I believe, aluminum, and are covered with the original brown canvas. I also have the original rinky-dink mattresses with the original cloth (still intact) covering them.
Before anyone asks, no they are not for sale. I had someone at a rally back East offer me $1000 for the bunks. Given my family's size and my penchance for originality, I just can't part with them, but if someone out there has the skills to bend aluminum rectangular tubing, then I can provide the dimensions to reproduce them.
Edit: After some research, here is what I found from an old Airstream brochure:
A number of comfort and convenience features are now available at extra cost. See your Airstream dealer for further details on these factory-installed optionals.
1. Bunk-The most practical bunk ever designed for a travel trailer! Provides solid, comfortable sleeping for even the largest children (carrying capacity 200 pounds) and yet folds up and stores out of the way during the day in specially designed brackets under the roof lockers. Well constructed of extruded aluminum frames and canvas duck material of military standard quality. 2" foam mattresses are also available."
This is the website with pics...Mine are the ones in the pics, exactly. I'll still take measurements for you this afternoon: