*** (This item sold as a pack of 10) *** For 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. .080 (5/64"), .100 (1/10"), .118 (1/8") approximate thicknesses.These states have safety laws in effect: Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho (Building Code), Illinois, Indiana (Building Code), Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri (effective 1/1/77), New Jersey, New York, North Carolina (Building Code), Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Virginia, Washington, West Virginia, and Wisconsin.