What you need is a fixed track with a wheeled running on the track and the leash connected to the runner. Think barn door. So depending on how long a track you want to run, it can get expensive.

If you just need to connect them and the joint doesn't need to take any load, you can get joint plates and nail them together, no?

Interesting. What about building a custom pantry/cabinet from next to the fridge, all the way to the back wall, front out flush with the wall cabinet, the side bottom out to that white box thingy, height to the top of the wall cabinet? The pipe would be within it and you gain some pantry space? Add a countertop to the same level to extend the current countertop.

That way the pipe won't have to support anything.

How far is the pipe from everything (the cabinet, the wall, the fridge)? Is the pipe plumb? It looks close to the wall at the bottom but quite far at the top. Also, what goes through the pipe? There is a gap between the fridge and the wall, do you do anything with it? Can we see a picture zoomed out so we can see the whole space?

Normally, I wouldn't put weight on a pipe (as in mounting things to it) simply because it wasn't designed for it. But building around it make sense. Its just a matter of where to mount what.

So the screen really doesn’t serve any purpose, right? It doesn’t stop bug, it doesn’t ventilate (or does it? Think I see the whole opening is covered by plywood.).

In that case, would you not consider building a mini-wall? From the outside in, some sort of exterior covering/siding/etc., vapor barrier, plywood, insulation, plywood, interior wall.

Wouldn’t that expose to insulation to the elements? Might help if we can see a picture?

How is it mounted? If you can cleanly remove it, put something else up and then put this back when you leave the place?

If the rules are explicit, why go against it? Is there something specific you are trying to accomplish?

I second doing each pane separately. It is a bit more tedious but the work is known. Taking the frame apart will incur additional unknowns and potential issues.

Looks like layer over layer. Are you planning on changing/redoing the cabinet and shelves? If so, I’d take those off first. Then check and see how far those vertical panels go across. They must be fake planks (large solid back) so it can be attached to the studs or real planks nailed/screwed to plywood or something. Also check the pegboard. Is it behind the panels? Or just butt up against it?

Also, you’ll have to unplug the electrical, unscrew the plate, and see. I bet the plate it’s screwed into the panel too.

Use a track.