The unit arrived without the "planks" assembled. I've assembled many products over the past 60 years or so and the assembly instructions for this unit are the poorest I've ever encounered.  The first plank assembles relatively straightforward IF you realize that not all the attachments are identical.  In order to align the mounting holes the middle plank has to be reversed in relation to the logo on it.  When assembled thusly you can't raise the narrowest plank......and you can't attach the narrowest plank in any manner at all.