K6189 Sheet Stock Acrylic Grade Standard Plastic Length 4 ft Plastic Width 4 ft Plastic Thickness 0.171875 in Clear Plastic Clarity Clear 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