Used 3 selves (2- 36" & 1-48") on a wall in my hallway. I arranged family photos on it Since I didn't want to hang the photos on the wall (and put lots of holes in the wall), I just leaned the frames against the wall. I also used "Command" double sided tape on the bottom of the frame, so the photos wouldn't slide off the shelve. The shelves look nice. I hung them myself. Just make sure you use a level to hang. 

Cons: One shelve had a damage, but I decided to keep it, because it wasn't noticable. Also, it would have been better if the shelves had small lip in front, to prevent items from sliding off.