| 摘要 |
The device has a flange (2) for closing a box in one of ends of the box and comprising external vertical side walls (21, 23) and external horizontal side walls (22, 24) oriented perpendicular to a main closing wall (20). External openings (210, 211, 220, 221) are formed on one of the vertical side walls and one of the horizontal side walls, respectively. Dismountable and repositionable caps (3-5) block three of the external openings so as to assure sealed closing of the external openings, where the caps are made of flexible polyethylene. |
