... quality 6161/T6 aluminum , good looking and durableor white powder coated steel frame.3, Main profile: (aluminum) 36 x 36 x 2mm ... , 32x 32x 2mmScissor rail14x27x1.5mm,or(steel)30x30x1mm,25x25x1mm scissor rail 12x25x0.8mm4, Cover: PU-coated, 420D polyester fabric, waterproof, UV resistant ...