Plastic Sheet Stock, HDPE, Marine, Plastic Length 4 ft, Plastic Width 2.5 in, Plastic Thickness 0.25 in, Black, Plastic Clarity Opaque, Tensile Strength 4,000 psi, Impact Strength 1.1 ft-lb/in, Friction Coefficient 0.31, Water Absorption 0.05 Percent, Plastic Density 0.034 lb/cu in, Corrosion and Chemical Resistance Good