Profile: NGF Industrial Doors manufactures roller shutter doors, steel doors, security doors and other types of industrial doors. The CD 38 built-on shutter is available as a manually operated or electrically operated door. It can be manually operated with the option of spring assist locking with an Espaniett lock to the bottom rail or rod and crank with an auto locking system. The shutters come as standard powder coated in white or brown, but can also be powder coated, at an additional cost from the RAL or BS color range. Our pneumatic roller shutter door has been developed for off-shore applications, providing a specialist product for extreme conditions.