Don't buy! The bracket that the shelf hangs on is not made to hit studs. There are 8 pre-drilled holes in the bracket, and no matter how hard we tried we could not get two of the screws to hit two studs at the same time, they are not the proper spacing apart for standard 16" stud spacing. There is no way the shelf will hang without falling with the drywall supports only, we tried that too and the shelf sagged so hard I thought it was going to fall, and that's without anything on it. We decided not to return and buy some additional brackets to drill into studs to support it underneath. I suggest researching and paying the cost of a legitimate American made product, that has a little engineering built into it... like appropriate screw-hole placement for standard stud spacing.