It has a small design issue. Because of the lower surface behind the bottom screw hole, the bottom screw pulls the support in more when fastened all the way which naturally slants the support and therefore slants the shelf. This causes the shelf to be NOT level. If you don't screw in all the way well it can wobble. I solved this by adding washers behind the support and taping them there to make that gap seen in the photo flush. Overall it was an easy fix and easy to install and looks wonderful