Comic Book Short House is a reinforced "outer shell" in which a heavy-duty short box (sold separately) will slide. This combination allows you to stack boxes up to six boxes high, while still being able to instantly access any one of the boxes" contents without rearranging stacks of heavy comic boxes. Short House consists of two parts: the drawer (any regular short box) and the shell, one outer sleeve and reinforcement inner sleeve which makes the shell even more sturdy. The pieces are formed from white 275 lb-test cardboard.