Aluminum U-Channel 6063, Aluminum, 6063, T52, U-Channel, U-Channel Profile Type Architectural, 8 ft Overall Length, Length Tolerance +/-1.000 in, 1 in Outside Leg Length, Outside Leg Length Tolerance +/-0.012 in, 2 3/4 in Inside Base Width, Inside Base Width Tolerance +/-0.024 in, Leg Thickness 0.125 in, Leg Thickness Tolerance +/-0.007 in, Leg Inside Corner Shape Square, Heat Treatment Tempered, Heat Treatable Yes, Mechanical Finish Mill, Yield Strength 21,000 psi, Tensile Strength 27,000 psi