| 摘要 |
The present invention relates to a window system. The present invention has window frames coupled to each other to form a window opening and a glass window installed in the window frame to seal a window opening. The present invention comprises: a fire protection layer unit holder coupled to an outer surface of the window frame; a fire protection layer unit of a fire protection material coupled to the fire protection layer unit holder be disposed on a front side of the window frame; a protection cover of an iron material installed to surround the fire protection layer unit holder and the fire protection layer unit. Therefore, time required to transmit flames or heat to the window frame due to a fire occurs in a region adjacent to the window system. |
