1,Enjoy two patent in design, windproof 2, Widely used in factory, 3,thickness: 0.8mm,1.0mm,1.2mm 4, slat width:130mm Reinforced Windproof Steel Rolling Shutters/DoorsDoor panel material: galvanized steel with powder finishment on surface. Steel Thickness:0.8mm,1.0mm ,1.2mm , each steel slat width:130mm   

   

automatic/power controled/electric steel rolling gate/door for big warehouse