It doesn't come with instructions but even a 5th grader can put this thing together. The top it reinforce so extra storm, but the bottom is not so that is why it will not hold as much weight.
It took myself and a 14 year old less than 10 minutes to put it together after un-boxing. That is saying something because I am a 100% disabled veteran with 2 Purple Hearts, so u don't get around very well.
I would recommend this if the measurements work for you.