An exterior door incorporates at least one moving glass insert or sash slidable in first and second spaced apart tracks. An end of the insert is coupled to an end of a spring biased rolled screen. As the insert moves from the roll, the screen is extracted therefrom providing a continuously variable length of exposed screen that exerts a retracting force on the insert. The insert may be supported at any one of a variety of positions by frictional forces exerted on the insert, or by the frictional and retracting forces, without need for counterbalances or latches.