| 摘要 |
PROBLEM TO BE SOLVED: To provide a sash capable of adequately controlling a timing of falling of an upper resin frame when a fire occurs.SOLUTION: A sliding door is fitted into a frame body made by framing an upper frame 10, a bottom frame and right and left vertical frames. In the upper frame 10, an upper resin frame 30 is arranged on an upper metal frame on the indoor side. The upper resin frame 30 has an inner peripheral surface part 30c, which laps over an inner peripheral surface of the upper metal frame and is engaged and fixed to the upper metal frame. A weight member 31, which adds weight on the upper resin frame 30, is set between the inner peripheral surface part 30c of the upper resin frame 30 and the inner peripheral surface of the upper metal frame. |
