"PLASKOLITE" ACRYLIC SHEETFor storm door windows or any glass areas which are most likely to be struck by your family or pets. Economical, safer than annealed glass, easy-to-install, and shatter-resistant. Optix acrylic is certified to meet the ANSI (American National Standards Institute) Z97.1-1994 standard.Size: 30" x 30" Standard Plaskolite Acrylic Sheet1/10" (.100) comparable to single strength glass Hot stamped with safety glazing code number.