| 摘要 |
A frame e.g. for doors, comprises a jamb and optionally also a threshold formed as a laminated construction comprising a core (11) e.g. of particulate board and stiffening surface layers (12) e.g. of hard board on both jamb depth defining sides of the jamb portion. Each jamb portion (10, 19) has end pieces of solid wood (Fig. 9). <IMAGE> |
