| 摘要 |
<p>The device (1) has a base plate (3) that is intended to be fixed on a box. A set of separable type plane elements (4, 4', 4'') is arranged to laterally extend with regard to the base plate. A set of reception elements (5, 5', 5'') is allowed to laterally extend with regard to the base plate, where the set of reception elements start from the base plate. The set of reception elements is arranged for receiving the set of plane elements after the set of plane elements is separated from the base plate. The device is installed in a space between the box and the ceiling of the building.</p> |
