| 摘要 |
<p>The device has an insulated housing (20) provided at the lower side of the cover (10), which is fixed and has a wall with a pipe passage (27) and a fire protection wristband (13,30). The insulated housing has a support structure (21) of sheet and an insulation layer (22). The insulation layer is arranged in the outer side of the support structure. An independent claim is also included for a pipe passage of a plastic tube.</p> |
