Just by turning the handle of the tilt and turn windows once, you can open the top slightly for secure ventilation. Also, by twisting the handle again and the window will swing inward on its side hinges for easy cleaning. GWI Windows tilt & turn windows can be used anywhere. You can choose your preferred effects and glass options to make your own style statement at your home or workplace. Tilt and turn windows offer simplicity and flexibility – providing the option of the window tilting inwards or being fully opened inwards.