| 摘要 |
The coupling (8) includes a reinforcement (9) that in particular has a U-shaped cross-section and is coupled to the lower edge (7) of an inner flank (4) of a roller shutter box (1) for protecting and reinforcing said roller shutter by means of a plate (15), made of rigid material if necessary, while establishing sealing using an underlying top carpentry crosspiece (6) by means of a flexible joint (14). |
