Sheet Stock, Acrylic, Grade Standard, Plastic Length 24 in, Plastic Width 24 in, Plastic Thickness 0.171875 in, Black, Plastic Clarity Opaque, Tensile Strength 11,030 psi, Impact Strength 0.28 ft-lb/in, Water Absorption 0.4 Percent, Temperature Range 32 Degrees to 170 Degrees F, Plastic Hardness Rockwell M95