| 摘要 |
In the present invention, a window for a window system constitutes an upper window and a lower window. When the lower window is pulled up to the upper window, the two windows are rotated upwards and folded upwards since the two windows are hinged together. Therefore, the sight of the windows is widened in order to improve the view, ventilation, and lighting; and at the same time make the floor side of the windowsill flat in order to be covered with less dust and facilitate cleaning. By assembling a cover profile on the indoor side of the windowsill, the exterior of the windowsill can be finished in a form harmonizing with the indoor wall. |
