I love them.  Searched for a wall shelf and/or shadow box that was deep.  I have two 13 month old boxer puppies... and needed to put the Urns of my past doggies... up high and out of reach.  Putting it together went well.  The screws and mollies were a bit small for the weight I was going to put on them... so I used small metal L brackets... screwed into a stud.