Inward opening window

الوصف

It is a window that can open *0 degrees vertically indoors or open low-angle ventilation horizontally indoors. The basic information inside the open and inverted windows is the door and window system that can be opened indoors and hung inward for ventilation. It is widely used in Europe, different from American windows and external windows, for example, in Beijing, due to the climate and cold environment, the functional requirements for doors and windows are higher than those in the south (there are generally 3 seals for inner opening and inner opening, which may be one more than external windows, and the sealing performance is higher; The walls of northern buildings are thicker, and there are often radiators and wide window sills on the inside of the windows, so the advantage of inner opening and internal pouring is that it is convenient to operate the handle to open the window)