摘要 |
<p>The support is welded to non-rotating hinge brackets and is fixed firmly into the ceiling and into the floor. The moving hinge brackets are mono-bloc with the armour plating which is fixed to the door, both armour and door being penetrated by the security peep hole. A three way bolt and connecting rod lock the door to the fixed door frame by the rod entering metal boxes, while a third and most secure fixing is when rod enters metal box cast solidly into the floor.</p> |