| 摘要 |
PROBLEM TO BE SOLVED: To provide a fitting frame body that has excellent economical efficiency while maintaining fireproof performance, and fittings.SOLUTION: In an opening frame body 10 constituting a fireproof resin sash having the opening frame body 10 with an opening and window glass for closing the opening of the opening frame body 10, a first fire-resisting sheet 15A formed from a first thermally-expansible refractory material, and a second fire-resisting sheet 15B formed from a second thermally-expansible material starting expansion at a temperature lower than that of the first thermally-expansible material are arranged.SELECTED DRAWING: Figure 3 |
