This unit had the worst set of instructions I have ever seen. None of the pieces were marked, including the hardware. You had to measure the screws with a ruler to identify them. Many of the pictures were difficult to reconcile with the actual pieces. I downloaded what looked like better instructions from the web site, but it turns out changes to the desk had been made and instructions were for the new version. If it wasn't so heavy and hard to pack up I would have sent it back.