A top-hung window refers to a window with hinges (hinges) installed on the upper side of the window and opened inward or outward. Top-hung windows are a type of aluminum alloy and plastic steel windows that appeared later. It is a new form developed on the basis of casement windows. It has two opening methods, which can be opened flatly or pushed open from the top. When the casement window is closed, a gap of about 10cm can be opened by pulling the upper part of the window inward. That is to say, the window can be opened a little from above, and the open part is suspended in the air and is connected and fixed with the window frame through hinges, etc., so it is called It is top-suspended. Its advantages are: it can provide ventilation and ensure safety. Because of the hinge, the window can only open a 10cm gap and cannot reach in from the outside. It is especially suitable for use when no one is at home. Recently, this function has not only been limited to flat windows, but sliding windows can also be opened by top suspension.
