The
Sentinal range is a top hung, sideways folding door. Folding
action means that the space taken up is less than other doors.
Can be made far larger than roller shutters because of their
triangular construction and inherent strength. Wicket or pass
doors are unnecessary as personnel access is always available
by partial opening. A good fuel saving benefit. Power operation
by electric motor, driving endless chain attached by endless
chain at top of door, can be controlled by push buttons, time
delay, photo-electric cells, radio. The systems are endless.
In current specifications - heavy and light duty.