Polyethylene Sheet Material Polyethylene Shape Sheet Grade Standard Length 24 in Width 24 in Thickness 3/8 in Backing Type Adhesive Cell Type Closed Cell Adhesive Type Acrylic Number of Adhesive Sides 1 Color Black Density 4 lb/cu ft Maximum Temperature 225 Degrees F Minimum Temperature -40 Degrees F Maximum Adhesive Temperature 230 Degrees F Minimum Adhesive Temperature -30 Degrees F Tensile Strength 85 psi Texture Smooth Firmness @ 25 Percent Deflection 14 psi