Rectangle Stock Cast Acrylic Standard Plastic Length 12 in Plastic Width 4 in Plastic Thickness 0.125 in Clear Plastic Clarity Clear Tensile Strength 9 000 psi Impact Strength 0.3 ft-lb/in Friction Coefficient 0.8 Water Absorption 0.4 Percent Plastic Density 0.043 lb/cu in Corrosion and Chemical Resistance Fair