Rectangle Stock, Polycarbonate, Standard, Plastic Length 4 ft, Plastic Width 4 in, Plastic Thickness 0.0625 in, Clear, Plastic Clarity Clear, Tensile Strength 9,700 psi, Impact Strength 14.0 ft-lb/in, Friction Coefficient 0.53, Water Absorption 0.13 Percent, Plastic Density 0.043 lb/cu in, Corrosion and Chemical Resistance Fair