Angle Stock Angle 90 Degrees Square Corners Isopthalic Polyester Fire-Retardant Resin (ISOFR) Smooth Finish Dark Gray Color Thickness 1/4 In. Leg Length 1-1/2 in x 1-1/2 In. Length 10 ft. Thickness Tolerance +/-0.010 In. Leg Length Tolerance +/-0.094 In. Length Tolerance +/-0.094 In. Min Temp Rating -100 Degrees F Max Temp 150 Degrees F Tensile Strength 30 000 psi