| 摘要 |
<p>One support section (1), with flat support surfaces (4) on two opposite sides, has a second support section (2) cohesively joined to it, extending at right angles to one of its edges, in profiled frame units for use in construction of a cavity or duct frame. The second section has a longitudinally aligned cutout, of channel- shaped cross-section, on one side, and a third flat support surface (7) on the other side. The first section also has an edge section (3) extending at right angles to it. The height (A) of this relative to first support surface, width (C) of first section relative to third support surface, and height of second section relative to second support surface, are all different.</p> |
