| 摘要 |
PROBLEM TO BE SOLVED: To provide a fitting that can be appropriately locked without adjustment during construction.SOLUTION: A fitting is supported rotatably on a part for forming an opening communicated with two spaces and has a sash capable of closing the opening. The part for forming the opening has an opening recess having a bottom, which is a hollow, in an opposite direction from the sash in a part opposite to the sash closing the opening. The sash has: an operation member rotatably operated from the spaces; a rotatable extension member which has an extension part which is provided inside the sash, relatively movably engages with the operation member in a relative movement direction to the operation member, rotates with the operation member and projects from the sash so as to engage with an opening recess, and extended in the relative movement direction; and an energizing member energizing the rotatable extension member in a direction of the opening recess. The rotatable extension member moves in the relative movement direction against an energizing force of the energizing member by contacting the tip of the extension part with the bottom when the extension part engages with the opening recess. |
