摘要 |
<p>Each vertically adjustable panel (2a-2n) has a guide portion (5) arranged on a guide (7), and a support (6) on another guide (8). The panels are separable from each other through outer lifting rolls (15) on an outer lifting guide (9). Each panel is provided on the lower part with a groove (3) and on the upper part with a spring (4).</p> |