Economical, safer than annealed glass, easy-to-install, weather-resistant, crystal clear, and shatter-resistant. Ideal for storm door windows or any glass area. It's impact-resistance, up to three times greater than double strength window glass. Optix acrylic is certified to meet the ANSI (American National Standards Institute) Z97.1-1994 standard. .080 (5/64"), .100 (1/10"), .118 (1/8") approximate thicknesses. 10 year limited warranty.