| 摘要 |
The system has a cover plate (1) provided with side edge segments that are arranged in vertical rail guide parts. The guide parts are mounted on sides of a sectional door. Four sealing parts (A-D) are arranged in resilient seal units. A communication opening is formed adjacent to sides of a gate, which is attached to the cover plate. An upper seal is positioned above a door opening. A middle seal is positioned on an edge of a header, which is placed within a bore. A lower seal is arranged on a periphery part. A convex surface is adhered to a concave surface of an extreme segment. The resilient seal units are made of rubber. |
