Aluminum Rectangular Tube, Aluminum, 6063, T52, Rectangular, 6 ft Overall Length, 2 1/2 in Inside Width, 1 1/2 in Inside Height, 3 in Outside Width, 2 in Outside Height, 0.25 in Wall Thickness, Wall Thickness Tolerance +/-0.025 in, Inside Corner Shape Square, Outside Corner Shape Square, Fabrication Extruded, Heat Treatment Tempered, Heat Treatable Heat Treatable, Mechanical Finish Mill, Yield Strength 21,000 psi, Tensile Strength 27,000 psi, 60 BHN Brinell Hardness, B60 Rockwell Hardness