These shelves arrived packaged very well, and in perfect condition. They were easy to hang, although I used my own drywall plugs and screws, the ones provided seemed very adequate. With proper measuring and preparation, and a little bit of patience, they mounted perfectly level, and look even better than I envisioned. I planned to only hang three, but made some calculation changes and used all four shelves as they came in a set of two. ￼