... -Layer SandwichMaterialGalvanized SteelSurface Texturecoating plateSection JointPinch-resistantSection Thickness40mm~50mmInsulationCFCFree Polyurethane FoamSealsThermal Break, Header Seal, Section Joint Seal, Bottom ... Seal ColorWhiteWindowOptionalTrackTypeNormal Headroom, Rear Mount Low Headroom, Front Mount Low Headroom, Lift Clearance, Vertical Lift, Incline, ContourFinishGalvanized ...