The Cargo Box is our sturdiest card storage box yet. It features rows both wide enough and deep enough to accommodate toploaders and magnetics. Every wall in this tough box is double thick so it stacks up to 10-high without worrying about crushing the bottom. The cargo box is sized to conveniently store in modern wire shelves, Ikea Kallax and other like-cubical systems. Use Slip Guard Strips to keep your cards securely in place.