The opening type of wholesale windows and doors is horizontally sliding.
In general residential building, the height of the window is 1.5m, and the window sill is 0.9m high, then the top of the window is 2.4m away from the floor surface.
The height of the window should be decided according to the requirements of lighting, ventilation, space image, but we should pay attention to the problem of high stiffness of the aluminium sliding doors pictures, and if necessary, we should add beams or "spell".
In public buildings, the height of the whole glass has exceeded 7.2m, which is not the scope of the general window.