Very flimsy and small plastic parts to attach fixed shelves to sides.  These move and pop off as you try to fit them into the slots in the sides.  I needed to glue them in place before assembling.  All parts do not fit snuggly together, leaving some obvious gaps.  Also, when you first open the box you are greeted with a strong smell and a warning about carcinogen exposure so you will probably want to open it and put it aside somewhere to allow it to off-gas for a few days.