| 摘要 |
The hatch arrangement for an opening in a wall comprises a hatch (10) positionable in a closed position in a frame fitted on the wall so that the opening is covered by it. The hatch comprises a metal plate (30) and an insulation. The insulation comprises at least one first layer with heat insulating material and is fitted on the metal plate. The hatch arrangement comprises a casing (30,36) which preferably totally encloses the insulation. The casing is of metallic material. |
