Plastic Sheet Stock HDPE Grade Marine Plastic Length 24 in Plastic Width 12 in Plastic Thickness 0.5 in White Plastic Clarity Opaque Tensile Strength 4 000 psi Impact Strength 1.1 ft-lb/in Friction Coefficient 0.31 Water Absorption 0.05 Percent Temperature Range -100 Degrees to 180 Degrees F Plastic Density 0.034 lb/cu in Plastic Hardness 64D