Triple-leaf windows, asymmetric vertical division 30-70 with a movable mullion

Vertical asymmetric division 30-70 with a movable mullion windows types-of-windows triple-leaf vertical-asymmetric-division-30-70-with-a-movable-mullion

Triple-leaf windows with asymmetrical vertical division 30-70 with a movable mullion. Top wing 1/3 of the total height. The lower wing 2/3 of the height. The movable mullion is one of the elements of the window structure, permanently connected to one of the sash frames. This makes it possible to divide the window with the sashes closed, but after opening them, it allows free use of the non-divided space.