Murray MacL -

The back space is also a very real problem in my camper. Interior wall panels are typically 1/8" thick splinterboard, with walls only about 1/2" to 3/4" thick, so there isn't enough depth to insert even a "molly" far enough to collapse it, even though once installed it would fit perfectly well. The "backing" of the panels is soft coarse-grained wood (single ply) that won't hold most "expansion" type anchors even to get the screw in. And surface mounting with even excellent adhesives doesn't work too well since the thing is unheated in storage and the temperature cycles pretty much shear off anything that's attached that way.

I just love the challenges.

John