A WINDOW WITHIN A WINDOW
A window within a window solves the problem of opening the same window to the inside and to the outside, whereas the structure of a window is simple and compact at the same time. A window within a window made of wood, aluminium or PVC materials consists of a window frame (1), intermediate casement (2) and casement (3). By using a window handle, the intermediate casement (2) and casement (3) assembled by means of standard window fittings can be open to the outside in all the ways of opening a window known today. This provides a new way of airing a room and also new ways of cleaning the whole window pane from the outside of a building in which the window is fitted. The casement (3) can be opened to the inside in all the ways of opening a window known today, whereas the intermediate casement (2) and the window frame (1) remain stably attached by means of standard window fittings.