Didn't want to drill holes in the walls. Decided to use the free space on the side of the bookshelf. Shelf thickness 17mm.
There are two types of hooks.
“Shelf_hook_top” - is attached to the side of the shelf
“Shelf_hook_top” - you can hang it on the top of the cabinet if there is at least 1 mm to catch it.
The author remixed this model.