| 摘要 |
PROBLEM TO BE SOLVED: To provide an opening frame body that has excellent economical efficiency or radiation performance while maintaining fireproof performance, and fittings.SOLUTION: An opening frame body 10 constitutes a fireproof resin sash 1 that comprises the opening frame body 10 having an opening, window glass 25 for closing the opening of the opening frame body 10, and a sash 20 for supporting an outer periphery of the window glass 25. A plurality of fire-resistant sheets 15 are arranged at intervals on at least one side of the opening frame body 10.SELECTED DRAWING: Figure 3 |
