The other key ingredient of the Integra system is the tilt-and-turn window. This multifuctional system component can be tilted open from the topp for ventilation, or they can be turned inward from the side for cleaning and full ventilation. To add, a micro-ventilation function is added that opens the seals letting airflow into the rooms without any debris, weather or human, animal or insect related hazards possible to get through. The idea behind the tilt-and-turn, also known as a DK window, is its versatility and practicality. All mentioned functions are controlled by a single, good looking, handle, making it super easy to use. They can be opened and closed with a simple turn of the handle using one hand, making them ideal for people of all ages and abilities.