A2Z Projects Balcony Doors are intended to provide more glass area due to an overall, slimmer frame sight line and are available as either single or double doors (French doors), opening-in or opening-out, and are offered with one operating handle by design, which is positioned inside. A special handle and a concealed snap-in device enables a temporary closing of the door when outside. Balcony doors can be stand-alone items, manufactured with fanlights and/or sidelights, or integrated into complete curtain walling screens.