Polyethylene Sheet, Material Polyethylene, Shape Sheet, Grade Military Specification, Length 18 in, Width 24 in, Thickness 2 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