Roller Doors Northern are the Industrial Roller Door Specialists! These are our 3 key offerings:Roller DoorsTitan Roller Doors are suitable for single or multiple openings. The door offers quiet operation with polyglide grease-free running strips. RDN offer a choice of secure locking systems: Centre lock, pad bolts or storage locks. The Titan door comes with a bottom edge rubber seal for weather proofing.Rapid Acting DoorsRDN are agents for ENVICO Rapid Acting doors. They have been specifically designed for the rigors of todays industrial environment. Simplicity, functionality, durability and affordability are the key factors influencing the door design. The doors are used in a wide spectrum of industry from external door ways and on internal openings down to 0 degrees centigrade.Industrial Roller Shutters? Exterior durable door for industrial / commercial applications.? Cold rolled interlocking galvanised steel slats.? Nylon end clips provide low friction quieter operation (no greasing side guides).? Springing application customised to each individual door.? Electrically operated using robust 1hp motor drive unit.? Many options including powdercoated colour finish.