California Proposition 65: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. PVC Sheet, PVC Type 1, Grade Standard, Plastic Length 4 ft, Plastic Width 4 ft, Plastic Thickness 0.25 in, Gray, Plastic Clarity Opaque, Tensile Strength 8, 350 psi, Impact Strength 2.2 ft-lb/in, Friction Coefficient 0.01, Water Absorption 0.06 Percent, Temperature Range 32 Degrees to 140 Degrees F, Plastic Density 1.42 g/cc, Plastic Hardness 84D. This item has been restricted from sale in the following state (s): []