| 摘要 |
The strip has a profiled hook formation at the top of the strip which fits into a groove provided with a stop to retain the hook. The groove forms the base of an adjacent strip. All the strips are provided with an upper hook and a lower groove. There is a main profile (2) with an upper hook (1) which is movable and orientable to one side or other of the strip. The edges of the lower groove (3) each have a profiled stop (4). The stops converge towards reach other symmetrically on the axis of the groove. The upper hook can form a pivot with the main profile and has profiles cavities allowing manual gripping of the shutter on both faces.
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