Polyethylene Sheet Material Polyethylene Shape Sheet Grade Military Specification Length 18 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 2.2 lb/cu ft Maximum Temperature 150 Degrees F Minimum Temperature -20 Degrees F Tensile Strength 32 psi Texture Smooth Firmness @ 25 Percent Deflection 9 psi Material Skin None Standards Military Spec. A-A-59136 Type 1 Class 1 Grade A