I’d give this bookcase 3.5 if it allows. Set up was simple, I did it by myself in 45 minutes, with 15 minutes I was trying to get the two back support metals to fit without any luck. These two pieces of metal are the same length, but it doesnt matter how I rotated and flipped them I just couldn’t get any of it to fit into the pre-made holes for them. The bookcase looks fine standing on its own, but if you actually touches it, it’s a little shaky without the back support. I wonder if there’s a way that I can get this problem fixed???