These are gorgeous and sturdy and exactly what I was looking for. I found it was easiest to ignore the instructions a little and construct them by screwing the top shelf in first, and then the support bars that cross at the back, and then the rest of the shelves -- it kept everything aligned and even. Once I figured that out, it took about an hour to put together three of the 17" ones. Came back and bought two more of the 34" ones. Love these shelves.