Think one piece extruded plastic *inner door* with a vertical row of
pegs sticking out of either side.
The *door shelves* hook over the pegs with the back of the shelves
resting against the door. If the plastic inner door expands and/or the
plastic shelves shrink the built-in clearance either side (which was
sloppy from the get-go) will then increase. Too much slop and the shelf
slips off the pegs with contents crashing down -- along with the
associated havoc -- cats stuck to the ceiling, wife frantic, Franks' red
hot sauce staining everything in sight and etc.
Now imagine increasing the length of said pegs as well as making them
larger in diameter (and softer/squishier) to both take up the side to
side slop and better grip the underside of the shelves.
It should be noted that the shelves are molded with what could be termed
as handles on either side to rest on top of and grip the pegs.
Fortunately the slots cast into the shelf handles that fit over the pegs
are equally sloppy.
I hope the above description is sufficient as one of those darned cats
has made off with the camera and that is as far as you are going to lead
me down the rabbit hole.
:)
John