| 摘要 |
The steel fire door closure mechanism has at least one arm supporting a closure foot (10) for fixture to the upper part of the door panel, and works with a reinforcement plate (4) fitted also to the panel. - The reinforcement plate is provided with drilled and tapped holes (5) arranged in a specific pattern which take screws for the fixture of the closure mechanism and the door panel after it has been hung in position. |
