The item was missing a critical hole and corresponding screw. I assembled it anyway and unfortunately failed within the first 3 days of use. The yellow arrow shows where the hole should have been drilled to received the screw as it is on every other corner of the box. Like the last photo this is a long screw that provides structural integrity to the box and strength to withstand internal loads. I should have sent it back, but it was already here so I figured I would use it anyway. I have been traveling or would have submitted this review earlier.