As someone else mentioned this is grey, not black. Also mentioned in another review, the directions could be better. I had to backtrack twice because the 3D easy inline directions omitted stuff. Using the directions that come with and the 3D online easy directions together will save some problems but not completely. A few caveats…
The inside entry with the circle cutout has one edge that is slightly thicker than the other. The thicker edge goes towards piece A. 
The feet have a plastic ‘cap’ that comes off of the screw in order to screw them in. 
The doors are hard to put on alone. ‘Partially prescrew’ the hinge holes on the unit AND use the styrofoam flat pieces to prop them up while mounting — particularly if you’re assembling alone.