Thor Forums

[LandKO]

Several years ago when I had a travel trailer, I did add a window in the side for an upper bunk. However, I was fortunate that the manufacturer of the TT had sent me the structure drawings that showed where the aluminum framing was imbedded in the wall. The drawings for that particular brand of TT showed that none of the windows had actual framing around the windows. They just cut holes in the composite side wall to accommodate the windows and used the clamping of the inside and outside halves of the window to reinforce the opening.
I was lucky the the location for the window I added had no structural members in the way.
I wouldn’t assume that the framing of the back wall is the same as a side wall.