Perforated Sheet Stainless Steel 304 Rectangle 40 in Overall Length Length Tolerance +/-0.125 in 36 in Overall Width Width Tolerance +/-0.125 in 0.12 in Thickness Thickness Tolerance +/-0.005 in Gauge 11 ga Center Spacing 0.37 in 0.25 in Hole Diameter Hole Pattern Staggered Hole Shape Round Fabrication Hot Rolled Heat Treatment Annealed Heat Treatable Yes Mechanical Finish 2B Yield Strength 35 000 psi Tensile Strength 85 000 psi 123 Brinell Hardness B90 Rockwell Hardness