• Permits door opening with minimum opening pressure.



• Distinctly different from butt hinged or pivot hinged doors.



• Does not require assistance of automatic or power assist operating.



• In opening mode, 2/3 of the door swings outward and 1/3 swing inwards.



• Traverse in an elliptical arc rather than a circular path.



• Currently in use with the US Navy and Australian Navy.



• Spare parts are readily available.