| 摘要 |
The cover has rotary molded plastics tubular sections (6) having upper and lower beads (7,8) on its rear face. A lower positioning rib (9) fits into a groove (12) of a profile attached to the bridge. The section has a C-section at its upper area to clip onto a hooked bar fixed to the bridge. An external face (15) between the attaching sections defines the visible surface of the cover.
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