Sheet Stock Cast Acrylic Grade Enhanced Impact Strength Plastic Length 12 in Plastic Width 12 in Plastic Thickness 0.171875 in Clear Plastic Clarity Clear Tensile Strength 10 500 psi Impact Strength 0.375 ft-lb/in Water Absorption 0.2 Percent Temperature Range -26 Degrees to 176 Degrees F Plastic Hardness Rockwell M100