Waiting on the handyman to hang so I can only rate according to the look of this item as I removed from the box.  I purchased 2 sets of 3 shelves.  They appear to be very sturdy and larger than I anticipated given the amount of wall space that I have.  I am sure I can figure something out.  I simply loved them at first sight.  I am hoping that I will be just as happy once they are affixed to the wall.