59” H × 15.5” W × 59” L
16 spot Ikea shelf. Holds 15 different things, because one cube is a rectangle, which makes it more useful if you have a single larger item. Like a puzzle, or board games. :)
Still works if all 16 items are the same size because you can put 2 in the rectangle spot. No problem.
Attached to the wall. Can be removed with a screwdriver. Will be removed. No problem.