K6061 Sheet Stock HDPE Grade Standard Plastic Length 4 ft Plastic Width 4 ft Plastic Thickness 0.25 in Off-White Plastic Clarity Opaque Tensile Strength 4 600 psi Impact Strength 1.30 ft-lb/in Friction Coefficient 0.2 Water Absorption 0.01 Percent Temperature Range 0 Degrees to 194 Degrees F Plastic Hardness 70D