| 摘要 |
The shield is constructed so as to snap into a painter's hole or like aperture in a structural member such as a bridge girder. The shield is constructed of plastic and has a pair of flexible retaining means at opposite sides which allow the shield to snap into the aperture of the member. The main section of the shield can be made of a mesh construction so as to permit the passage of air therethrough and avoid flutter or can be of solid construction.
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