I was really impressed when I saw these on the wall, however, as I was placing a very light-weight object on the shelf, it fell off the wall!  The keyhole metal pieces on the back of the frame completely came unglued and I noticed a small split in the wood as well.  I was so let down when this happened.  I purchased these as a gift for an elderly lady in assisted living.  She also loved the look of these shelves and was hugely disappointed as we watched it fall on the floor.  Hopefully the maintenance guy can fix it.  Grrrrr!