| 摘要 |
A window or door frame or a door having a frame construction, wherein the frame comprises a plurality of frame members (1-4) wherein said frame members are of extruded box section divided into two or more internal sections by at least one longitudinal internal wall or web and wherein joints between said frame members are formed with one or more prefabricated jointing members (5-6) each having one or more spigots or fingers engaging with said frame members by insertion of said spigots or fingers into an internal section of the frame members at least two spigots or fingers being inserted into each frame members at said joints. |
