CARDBOARD BOX HAVING AN EXPANDABLE VOLUME

A box for packaging objects, said box including a first belt made up of four vertical panels and terminated by a return tab, each vertical panel being extended by two opposite side flaps designed so that, once they have been folded over at right angles, they form a bottom and a first top for said box, each of at least two of the side flaps having a cutout on a fold line parallel to its outside edge, which cutout enables a tongue to be detached from said flap, said box further including a second belt made up of four other vertical panels and terminated by another return tab, each vertical panel being extended by a single other side flap designed to form a second top for the box, each of two other side flaps being provided with at least one opening or at least one notch for receiving said tongues.