| 摘要 |
PROBLEM TO BE SOLVED: To attain improvement in design, burglar prevention and productivity. SOLUTION: This sash is provided with a sash frame 1 composed of an upper frame 1a, a lower frame 1b and left and right longitudinal frames 1c and 1d and doors 2 and 3 provided on this sash frame 1 so as to be freely opened/closed, an angle part 10 is provided on the indoor side of the upper frame 1a in one body or separate body, a magnet 9 is provided inside the upper side of the doors 2 and 3, the angle part 10 is provided with a burglar sensor 7 to be operated by the magnet 9 when the doors 2 and 3 are opened, and a cover member 14 is provided for covering this burglar sensor 7.
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