最終更新日:2022/12/24
Hook joints must be worked on the side of one of the front sash stiles, and on the shutting stile of the side sash, the airtight bead being formed on the hanging stile.
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Hook joints must be worked on the side of one of the front sash stiles, and on the shutting stile of the side sash, the airtight bead being formed on the hanging stile.