摘要 |
<p>The structure has a U-shaped structure (20) formed of a base plate (23) extended by two parallel lateral flanges (24, 25). An inner face (23') of the base plate is pressed against an edge (11) of an opening (2), and secured to the edge by a screw (28). The flanges are secured by a through-bolt (30). A locking unit (21) e.g. magnetic plate, locks the opening in a closed position on a frame (3) fixed to the base plate, where the locking unit cooperates with a complementary unit (22) e.g. magnetic plate, provided in bottom (17) of a rebate (16) of amount of a vertical upright (14) in glance.</p> |