ST-22026 Steel tube inside to make very strong Inquiry Now Details &features Open style: Customized Railing and Shutter SystemSpecial Design :Easy Assemble OnsiteFrame Depth: 100mm+ with Interior Galvanized Steel TubesThickness: 2mm Hardware: ChinaSurface Colors Options: Black/Bronze /CustomizedGlass Options: Laminated glass Documents Specifications READ NOA Certificate READ NFRC Certificate READ Showroom ONLINE Installation Guide READ