A million pieces, like a prior review you feel amazing when you put it together-instructions are HORRIBLE. Reviews mentioned a how to video WHERE and no mini drill allowed, your hand hurts from screwing. The magnets don’t belong to the cabinets you need to figure how to make it work. The numbers! I believe 21 was 23 by elimination process. It’s great if you are a problem solver. Once you get it you can’t return it after you rip open the box. Kudos to the 14 year old reviewer who built it because it’s allot