Tilt-turn windows are three windows in one: Depending on the handle position, they can be operated as fixed window (handle in 6 o'clock position), in-swing casement window (handle in 9 o'clock position) and tilt-in-from-the top (='hopper' window; handle in 12 o'clock position). Tilt-turn windows are easy to reach from the inside for cleaning and maintenance and also offer added security and draft-free ventilation. The highest performing window on the market, the Tilt-turn window combines long lasting beauty and easy dependable operation. It has become the market leader in residential and commercial construction in Germany since the 1960's. The tilt-turn window concept has now gained wide acceptance inside and outside of Europe. Key Features: Easy cleaning and draft free ventilation due to dual function operation (hopper and in-swing casement window). High security and energy efficiency, due to fully concealed multi-point locking hardware (standard hardware: ROTO ROYAL; for coastal applications: SIGENIA/HTL STAINLESS). Easy installation and smooth operation due to 3-way adjustable sash construction (up-down + closing pressure + left-right). Solid construction, due to 2 3/8" thick sash and frame, with double mortise-and-tenon joinery. Utmost energy efficiency due to triple overlay sash construction. Wide selection of handle styles and - finishes to satisfy any taste and preference. Window handle design can be matched with door handles. Full range of glazing options (standard glass: ¾ overall-DS clear). Screens available. Custom sizes and custom designs, including non-mullion French casement and large operable sash sizes. Made from laminated solid vertical grain Douglas-Fir or a wood of your choice.