Polypropylene is an economical material with moderate resistance to water and chemicals. This Product is Manufactured in China. Thickness: 1-1/2"; Thickness Tolerance: (-0" - +0.094"); Width: 6"; Width Tolerance: (-0.25" - +0.25"); Length: 24"; Length Tolerance: (-1" - +1"). Color: White; Clarity: Semi-Clear; Tensile Strength: 4,200 psi; Tensile Strength Rating: Poor; Impact Strength: 1.2 ft. - lbs./in.; Impact Strength Rating: Poor. Coefficient of Fricton: 0.5; Friction Rating: Slippery; Water Absorption: 0.0001; Water Absorption Rating: Excellent; Hardness: Rockwell M85. Density: 0.033 lbs / cu. in.; Temperature Range: 0° to 180° F; Specifications Met: FDA, UL 94 HB.