Overall disappointing product.  Comes with unclear instructions.  Brackets are cheaply made.  There are holes at the top and bottom of the brackets for screws, and once mounted on the wall, the brackets do not sit flush against the wall.  You have to choose one of the holes to screw all the way into the wall, and the other only partially screwed in.  More likely than not, you are going to end up with an unstable set of shelves.