The pieces of metal on the sides of the interior walls, to which the Suburban floor is "bolted down" (I'd say the plywood floor is "bolted up", under the steel strips) are strips of angled steel that are spot welded to the side walls in about 30 places on each side. Only one side-strip of metal has to removed in order to remove the entire Suburban floor (plywood) in one piece.
I do not recall how the two types of Panel floor wood are attached to the Panel body and frame.
