Three drawer rails were installed, one was not, but I think it had been and had been knocked off before shipping, because the holes left in the side there were all huge and rough. That meant the screws could not get a grip to re-install it. Of course by the time we realized this, it was 3/4 built, so there was not really an option to “return” it. We went looking for larger screws ourselves, which were fat enough to grip but slightly too long, so they went through the outside a bit. Also there were no stickers to cover up the hardware like in the first piece we purchased, so no way to hide the damage. Also, it would be really nice if it was the same height as the return on the coordinating desk we bought - just 2 inches off, even without the wheels it would be 1/2 inch off. So not great design in terms of buying multiple components for a set.