| 摘要 |
PROBLEM TO BE SOLVED: To provide a sash capable of preventing falling-off of glass, even if aluminum rail and frame melt in a fire.SOLUTION: A sash 1 of the present invention comprises an aluminum rail 12 having a glass holding groove, a glass holding groove reinforcement material 25 provided between the groove bottom of the glass holding groove 21 and a glass end part and covering the glass end part and a lower rail reinforcement material 51 provided in a hollow part 23 of a lower rail 7, and a lower frame 15 comprises a lower frame reinforcement material 52 provided in the hollow part, and the lower frame 15 and the lower rail 7 are connected by a sash support tool 19, and the glass holding groove reinforcement material 25, the lower rail reinforcement material 51, the lower frame reinforcement material 52 and the sash support tool 19 are formed of a construction material higher in a melting point than aluminum, and are vertically juxtaposed under glass. |
