Gray Plastic Sheet CDirect.com Plastic Sheets; Material: Polycarbonate ; Thickness (Inch): 1/4 ; Length (Feet): 1 ; Tensile Strength (psi): 9000 ; lor: Tinted Gray ; Material Grade: Standard Material Polycarbonate Thickness (Inch) 1/4 Length (Feet) 1 Tensile Strength (psi) 9000 lor Tinted Gray Material Grade Standard Hardness Rockwell R-120