Aluminum Rectangle Tube 6063, Aluminum, 6063, T52, Rectangle, 36 in Overall Length, 6 in Outside Width, 1 1/2 in Outside Height, 0.125 in Wall Thickness, Fabrication Extruded, Mechanical Finish Mill, Yield Strength 31,000 psi, Tensile Strength 35,000 psi, 73 Brinell Hardness, Includes Material Certificate Yes, Standards ASTM B221, System of Measurement Inch