| 摘要 |
A door frame comprises opposed door jambs and a door head, with the jambs and head each being formed from a metal section (6) of channel-shape having a base wall (8) which carries a door stop (12) and opposed side walls (10) of a width such that when the section (6) is applied to a door opening within a wall with plasterboard sheeting (16) on the wall around the opening, the opposed side walls (10) of the section (6) will overlap and lie closely adjacent to the outer surface of the plasterboard (16) with the edge of the plasterboard (16) being concealed with the interior of the section (6), the opposed side walls (10) being perforated to permit a skim coat of plaster to be applied over the side walls (10) and adjacent part of the palsterboard (16) to conceal the presence of the side walls. In one embodiment the metal section is formed from two components which engage with a friction fit to provide width-adjustment of the section to suit walls of different width.
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