I have "built" many online purchased items recently and this was the most difficult item to assemble.  The difficulty lies with the instructions that are not clear.  I would follow the instructions (so I would think) only to have to take screws out and redo the steps.  The hinge istallation instructions were the worst part and I definately needed my glasses to decifer the images in the instructions.  However, pleased with the finished product which I use to store pool equipment in.