| 摘要 |
PROBLEM TO BE SOLVED: To provide a sash with a simple structure capable of preventing a frame body from breaking and a gap from occurring even if the sash is exposed to a high temperature when a fire occurs.SOLUTION: A sash has a frame body 1 made by framing an upper frame 10, a bottom frame 11 and right and left vertical frames 12 and 12. The bottom frame 11 and the vertical frame 12 have hollow parts 11c and 12a in a longitudinal direction, respectively. A lower reinforcing material 45 is set in the hollow part 11c of the bottom frame 11. A vertical reinforcing material 40 is set in the hollow part 12a of the vertical frame 12. The vertical reinforcing material 40 and the lower reinforcing material 45 are connected. |
