| 摘要 |
PURPOSE: A system window is provided to increase air tightness and water tightness by preventing the inflow of water or wind to an indoor through a drain hole. CONSTITUTION: A system window comprises a window frame(20), a sash frame(40), and a sub frame(30). The window frame has a plurality of drain holes for discharging the inflow water to an outdoor. The sash frame is installed on the window frame to be opened and closed and supports a window glass(W). The sash frame has a plurality of drain holes for discharging the inflow to downward. The sub frame has one end fixed to the sash frame and the other end fixed to the widow frame. The sub frame has a drainage path for delivering the inflow water to a drain hole of the window frame from the sash frame. |
