The shelves are very heavy, which from a construction lasting point is good, but from an easy to hang perspective it was a but challenging as the hangers go across and are not positioned in a way so you can hang on more than one stud.  Also the hanging template seemed to be a tad off, it lined up to hit two of the three screws which make me a bit nervous as it is so heavy and it is over a bed.  It is super easy to put together, but challenging to hang.