I absolutely love this sturdy and attractive unit! Putting it together took some time but the process was straightforward. The assembly instructions were clear, all the hardware was clearly labeled and securely packaged, and everything aligned perfectly. The top metal frames fit into the bottom frames right below the drawer. At that point, there are four vertically aligned screws on each side. The instructions indicate to install the frames with the screws facing outward, but I preferred to have the clean side facing outward. It works either way. A great purchase.