Acrylic Sheet, Acrylic, Grade Standard, Plastic Length 4 ft, Plastic Width 24 in, Plastic Thickness 0.171875 in, Colorless, Plastic Clarity Clear, Tensile Strength 11, 030 psi, Impact Strength 0.28 ft-lb/in, Friction Coefficient Not Rated, Water Absorption 0.4 Percent, Temperature Range 32 Degrees to 170 Degrees F, Plastic Density 0.043 lb/cu in, Plastic Hardness Rockwell M95