| 摘要 |
<p>The device has inspection frames (1), and an inspection cover (2) insertable in the frames. The inspection frames and/or the inspection cover have multiple fastening units (7a, 7b) for alternatively attaching of ceiling- and/or frames expansion components. The ceiling- and/or frames expansion components are designed as sound-, radiation- and/or smoke- and/or fire protection-insulating board (10) and/or insulating strip (11). The components are connected with the fastening units in a form-fit and/or force-fit manner.</p> |
