Which factor is crucial when selecting a fiberboard box for heavy items?

When selecting a fiberboard box for heavy items, the thickness of the box material is a crucial factor. The material thickness directly correlates with the strength and durability of the box. Thicker fiberboard provides better resistance to crush and puncture, ensuring that the contents are well protected during handling, storage, and transportation. This is particularly important for heavy items, which exert more stress on the packaging; therefore, a stronger box is necessary to prevent failure.

While color coding, brand reputation, and box design may have their own importance in various contexts, they do not specifically address the physical capability of the box to safely contain and protect heavy goods. A box that is not adequately thick may fail under the weight, leading to damage to both the box and its contents. Thus, selecting a box with the appropriate material thickness is essential for ensuring that heavy items can be safely handled and transported.