...Is the closet, in fact, structurally necessary for the shell to hold its shape around the door and wheel well, or is the fact that the trailer loses its shape somewhat when it isn't there a sign of something bad?...
In the various discussions of this type of problem in this forum and a Boler-specific forum, the consensus seems to be that the [b]interior fittings, and especially the one on the door side (normally the closet) are
important to supporting the upper shell. I don't know about Casitas, specifically, but I also don't know of a reason why they would be an exception.
In the case of my Boler
B1700RGH, the kitchen is beside the door, and there are wrought-iron braces from counter to upper cupboard which support the upper cupboard, and I believe the shell as well; on the other side, the bathroom, closet, and refrigerator
cabinet span floor to ceiling along the straight side of the trailer.
In addition to the cabinetry, there are also [b]braces beside the door in Bolers. I hear that they are chromed steel tubing in most 1300's; in my B1700, they are wood, and are screwed into the door frame area for its whole height, one on each side. In the current Escape
, there is a substantial moulded fiberglass frame surrounding the door, bonded into the structure before the moulds are pulled off of the joined shell halves. I don't know what - if anything - Casita
uses for door-area reinforcement.