The holes in boxes are called “ventilation holes” or “airflow holes.” The purpose of these holes is to allow air circulation inside the box so that your items don’t get damaged by moisture during transport.
The reason for having ventilation holes in boxes is because some materials that go into shipping boxes are prone to moisture damage. The most common example of this is cardboard boxes, which have a tendency to swell up and buckle if they get wet during transport.
Ventilation holes let air flow through the box so that the moisture in the air can evaporate and be removed from the inside of the box.
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Last modified: November 1, 2022