First, the depth is not 23 cm but 13 cm - protrude CDs and DVDs. Secondly, the structure is easy but together built up parts do not sit precisely - varied from one to three mm - thanks also to the pre-drilled holes. The idea with two box is good absolutely not suitable for the delivery, but for a piece of furniture. I would not buy it again. Return is too cumbersome. On the shelf is stable otherwise, the delivery was super fast.