| 摘要 |
PROBLEM TO BE SOLVED: To maintain stable cutoff of water with the lapse of time even if members have been offset or deformed after a long period. SOLUTION: A mullion gasket 30 is mounted on the indoor side of the overhanging portion 3C of a mullion 3 and is brought into elastic contact with a vertical panel holding gasket 22 located on the outdoor surface of a panel P.
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