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Perforated Electrically Operated Colour White Product Name Perforated Electrically Operated Colour White Manufacturer Diamond Doors Product Code J2002 Product Description Perforated Electrically Operated roller door.With a tubular motor fitted within the roller.Automatic operation can be added.A tape drive around a flange on the roller is traced through the facade with pulley guides to an inertia reel on the room side.With gear drive from the shutter roller traced though the building facade to a universal joint on the room side that is operated by cranked winding handle.