| 摘要 |
<p>The frame is particularly for an internal door, having two vertical columns formed by rolling or extrusion into a U-section with flat walls and a hook section extending inwards accommodating a sealing strip acting against the vertical edge of a hinged door. Each securing device for the columns comprises an anchor fixed against the outer edge of the wall opening, part of which is a flat plate extending vertically to the outer edge, while a plate parallel to it is fixed to the column by means of a bolt passing through the wall and screwing into the plate. On tightening the bolt up, the first plate is clamped between the second one and the wall of the column.</p> |
