A box casing (1) which is made of insulating material and is essentially cuboid, has on one of its end faces a slide-in aperture (2) through which a slide-in unit (6), which is intended to accommodate food, can be inserted into the interior (3) of the box. The slide-in aperture (2) of the stackable box casings (1) are sealed by means of sealing flaps (7), which can also be individually opened when the boxes are stacked so that the individual boxes can be loaded and/or emptied in any sequence. IMAGE
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