Tilt-and-turn window hardware was developed by the German engineer Wilhelm Frank in 1935.
Tilt-and-turn windows swing inward and can be opened in side-hung (turn) and bottom-hung (tilt) modes, hence the German name ”Dreh-kipp”, or ’turn-tilt’.
Tilt-and-turn window hardware was developed by the German engineer Wilhelm Frank in 1935.
Tilt-and-turn windows swing inward and can be opened in side-hung (turn) and bottom-hung (tilt) modes, hence the German name ”Dreh-kipp”, or ’turn-tilt’.