I GIVE IT 2.5 STARS....
1st issue is that the instructions state you will need only the Allen key (provided) and a screw driver. There were no pilot holes drilled into the wooden shelves and there is no way you are getting the screws into the wood with just a screw driver. Plus, you now have to measure or eyeball (if u have a good eye) the shelves so they are screwed in evenly.
2nd issue ( please if anyone else experienced let me know) the shelves or the whole unit has a very STRANGE odor, like it was sitting on a DOCK/PIER to long.
3rd issue - The spacing between the shelves is awkward at 11 3/4 inch due to the under brackets where shelves are affixed. they could have made them a solid 12 inches  of space.

The Unit is fairly sturdy and does come with anchor brackets to secure to a wall. 

Unfortunately I fully assembled the unit and discarded the packaging otherwise I would have returned it because of the SMELL ALONE.