Getting back to the instrument closet, I will put these two photos on and explain the workings of the shelves.
After putting the guitar cases in there, I realized there was enough room to get my two accordions in there as well, because the necks of the guitar cases are narrower than the body section.
I needed to make a shelf for the accordions. It had to be removable so as to let the guitar cases out when need be.
Look at the top picture. the accordion shelf sits on wood strips on the sides. The shelf itself is only deep enough for the accordion cases.
On the center strip of the face frame in the back, there is an L bracket in which I drilled a hole big enough to put a 5/16 inch bolt through the shelf into it. This keeps that shelf in place.
When I want to remove the large accordion or any guitars, I pull the bolt out and slide the shelf back and lift the shelf out. The top shelf does not remove. It houses the Cittern, two dog leashes and a dog brush.