U Channel Stock, Polycarbonate, Grade Standard, Wall Thickness 0.05 in, Plastic Length 3 ft, Outside Leg Length 0.4 in, Outside Base Width 0.49 in, Inside Leg Length 0.35 in, Inside Base Width 0.39 in, Clear, Plastic Clarity Clear, Tensile Strength 9,700 psi, Impact Strength 14 ft-lbs/in, Friction Coefficient 0.53, Water Absorption 0.13 Percent, Plastic Hardness Rockwell R120