Check the listing for details. GRAINGER APPROVED 1001328BLU Polyethylene Sheet,L 4 ft,Blue 30WM81. Width: 48 in, Condition: New. Listed at 70.57 USD. Polyethylene Sheet, Material Polyethylene, Shape Sheet, Grade Standard, Length 4 ft, Width 4 ft, Thickness 3/8 in, Backing Type Plain, Cell Type Closed Cell, Adhesive Type Plain Backing, Number of Adhesive Sides 0, Color Blue, Density 4 lb/cu ft, Maximum Temperature 180 Degrees F, Minimum Temperature -100 Degrees F, Tensile Strength 85 psi, Texture Smooth, Firmness @ 25 Percent Deflection 14 psi, Material Skin None, Standards MVSS 302, Chemical Resistance Good, Oil Resistance Good Offering high tensile strength and tear resistance, this crosslinked polyethylene foam sheet is ideal for cushioning, packaging, flotation, and shock absorption applications. The crosslinking process adds resilience, elasticity, and temperature stability to the sheet, allowing use in a wide range of temperatures.