The Velux Integra GPU window has a double manual pivot opening and an electric transom window. It is made of heat-treated wood with a seamless polyurethane coating that does not require maintenance. In addition to the EPS shaped panels, a special Tmt heat-treated wood was used, which contains 50% less water and insulates 24% more than traditional wood; the external covering is in gray aluminum. It is designed for the installation of manual, electric or solar shutters and blinds. The vasistas opening is 45 ° and guarantees a wide view to the outside; the window can also be tilted 180 ° to facilitate cleaning the external glass directly from inside the house. Like all Velux roof windows, it is equipped with a control and ventilation bar, to ensure healthy air circulation even when it rains. The filter leaves dust and insects out and is equipped with a sensor that automatically closes the window at the first drops of rain. It is compatible with Velux Active, the intelligent system that manages and improves the indoor climate of the house thanks to sensors that monitor temperature, humidity and carbon dioxide.