Originally Posted by Inland RV Center, In
The original AC became a part of the roof.
It "DID NOT" have any framing built in.
When you install a new Ac, you will have to install a couple of "stringers" and cross members between those two stringers.
If not, the new AC will cave in the roof, when you hit the first bump.
I'm really confused, but that's not new, as my husband can tell you! We bought a 15,000 btu Carrier Low Profile unit to replace the original Armstrong a/c on our '78 Tradewind. After reading all the posts, I thought that the new a/c would require 14" x 14" framing built out of aluminum channel to go between the inner and outer skins. I actually sent links from Air Forums to the service center to explain what I was talking about. The lady at the service center then told me that no new framing was needed. Did Airstream include the framing on 1978 models? Andy and anyone else who sees this, would you mind chiming in? I want to make sure that this is installation is done correctly. I certainly don't want my a/c winding up on the floor, nor do I want mold in the roof.