Aluminum U-Channel, Aluminum, 6061, T6, U-Shaped, U-Channel Profile Type American Standard, 12 in Overall Length, 2 3/16 in Outside Leg Length, Leg Inside Corner Shape Round, Fabrication Extruded, Heat Treatable Heat Treatable, Mechanical Finish Mill, Yield Strength 40,000 psi, Tensile Strength 45,000 psi, 95 BHN Brinell Hardness, 60 HRB Rockwell Hardness, Includes Material Certificate Material Certificate with Lot Number, Base Thickness 0.437 in, Outside Base Width 6 in