| 摘要 |
PROBLEM TO BE SOLVED: To provide a sash providing a maximum open area in the completely opened state of movable sashes. SOLUTION: This sash is provided with a frame body F having at least four parallel rails, a fixed sash 4 and at least three movable sashes 1, 2, 3. The fixed sash 4 is fixed to one vertical frame side E of the outdoor side rail of the frame body F, and one end abuts on one vertical frame E to form a Fix part 9. The movable sashes 1, 2, 3 are provided one by one at the remaining rails so as to be travelable, and when the movable sashes 1, 2, 3 are completely opened, all the movable sashes 1, 2, 3 are settled on the indoor side of the Fix part 9.
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