This product was specially developed for big main entrance doors, perfectly framing the landscape in this solution where the vent turns softly and silently around a vertical axis. No more hinges or additional hardware. The main advantage of this system is the possibility to make wide open areas. It’s possible to customize each door to the clients’ needs. to 9m ². This window offers excellent performances, both acoustic and thermal. This system allows the inclusion of shutters and fly screens.