Rolling Door double-layer aluminum6063T5 ISO14001,ISO9001,ROHS,CCC,UL, CE, TUV,CB 20 years guarranty for roller shutter Rolling Shutter DoorFor logistics,commerical,industrial,commercial roller doorAll aluminum, or plastic components for oxidation resistance.Extruded aluminum slat profiles. Simple manual operators: crank, spring assist.Push button electrical motor operators.Extruded aluminum ...