Polyethylene Sheet Material Polyethylene Shape Sheet Grade Standard Length 24 in Width 24 in Thickness 1 in Backing Type Plain Cell Type Closed Cell Adhesive Type Plain Backing Number of Adhesive Sides 0 Color Gray Density 2 lb/cu ft Maximum Temperature 160 Degrees F Minimum Temperature -20 Degrees F Tensile Strength 40 psi Texture Smooth Firmness @ 25 Percent Deflection 7 psi Material Skin None Flexibility Good Standards UL 94 HF-1 Chemical Resistance Good