Dawud Ladder Bookcase is extremely sturdy. I was nervous that it would be flimsy and not sit well on the wall. I could not have been more wrong. It is heavier than most other ladder bookcases I have used. It was so easy to assemble. The instruction were clear as day to follow. It came with several mounting screws to get it up onto the wall. I opted for a little heavier duty dry wall mounts as it was heavier. Love it!