Absolutely the worst desk I have ever had. I have built over 10 different work desks which may not seem like many, but this just fell apart trying to put together. I even put easy slide casters on B/C before assembling to help slide across the floor easily.  Section E was too heavy to support Section's B and C and the pics are below.  Obviously made the drawer assembling impossible to attach and useless. Waste of money and I don't have time to play the return game.  Took video too but won't allow me to upload.