Aluminum U-Channel, Aluminum, 6063, T52, U-Shaped, U-Channel Profile Type Architectural, 8 ft Overall Length, Length Tolerance +/-1.000 in, 2 in Outside Leg Length, Outside Leg Length Tolerance +/-0.024 in, 4 9/16 in Inside Base Width, Inside Base Width Tolerance +/-0.034 in, 1.25 in Inside Height, Leg Thickness 0.188 in, Leg Thickness Tolerance +/-0.007 in, Leg Inside Corner Shape Square, Fabrication Extruded, Heat Treatment Tempered, Heat Treatable Heat Treatable, Mechanical Finish Mill