Eco-product ,energy-saving ,competitive price Aluminum shutter/Aluminum louver/Aluminum blind/Aluminum roller shutter: 1. Profile: Aluminum alloy 6063-T5, with thermal break Surface treatment: Powder ... with easily opened and installed, tightly closed and easily assembly Aluminum Window& DoorMaterialProfileBrandChinese top brand.Surface treatmentPowder coating, Electrophoresis, Anodize and ...