The Superior electrically operated folding shutter is aptly named, being internationally accepted as the most robust shutter available. The  Superior is particularly suitable for both heavily used and very large doorways on applications ranging from rapid acting fire and ambulance station doors to shipyards and aircraft hangars. Superior Doors have been tested for wind resistance and can be designed to meet onerous wind load conditions. Doors can be provided as a single or pair with the latter reducing the bunch dimension and operating twice as fast.