| 摘要 |
The frame has a horizontal upper wall (2), and lateral wall with a vertical upper part (3) and inclined lower part (4). The parts define an obtuse angle in the outer surface of the frame. An inner wing (6) is vertical and parallel to the upper part. Grooves (7, 8) are arranged on the wing, where the grooves are with opening turned towards interior of the frame. An independent claim is also included for a false ceiling slab comprising frame. |
