A roller shutter industrial door up to a massive 36 metres wide and available up to 12 metres high!! The ultimate in large roller shutter doors with a sliding centre mullion for when the full width is required. Simple and effective. Insulated steel lath sections give the strength required for such a large width without the problems of deflection in the curtain so often suffered by wide roller doors of lower quality. Ideal for shipyards, warehouse depots, distribution centres, workshops, etc..