It seems like a pretty heavy duty bookcase.  I filled it with books so I will have to see if it can stand up to the weight.  It was fairly easy to put together, but as mentioned in other reviews, the back is very flimsy.  Mine tore just a bit on one of the folds as I was lining it up to nail to the bookcase.  The tacks fixed it up though and it is not noticeable.  I wish I had also known that the fixed shelf is bigger than the removable shelves and it looks a bit odd but I can live with it.