| 摘要 |
<p>A fire-resistant system for passing at least one cable, tube or the like through an opening in a wall, which system comprises a fire-resistant sleeve member comprising a continuous slit, which is at least partially arranged round said at least one cable, tube or the like, and which is at least partially installed in said opening, characterized in that the sleeve member can be placed in a position in which longitudinal edges of said slit overlap permanently under material stress.</p> |
