Tough and durable, polycarbonate plastic is significantly stronger than plate glass and acrylic plastic. Polycarbonate plastics are a lightweight and economical glazing material that provides increased protection against high traffic use, vandalism and theft. Polycarbonate plastic is more dimensionally stable than acrylic over a wide temperature range. And, compared to acrylic, it is only slightly less transparent. Because its surface is often compared to acrylic, polycarbonate plastic sheets are more prone to scratching.