Impact Modified Windshields are made of a modified acrylic. This modified acrylic has a higher resistance to shattering when compared to regular Acrylic. This modified acrylic has a nominal thickness of 0.177-inches. This is commonly referred to as OPTIX Impact Modified Acrylic. This windshield is assembled using a patented adhesive process for the continuous hinge. All mounting hardware is provided in the false bottom of the box. This windshield will be packaged individually for damage-free shipping with a protective film applied to both sides. This is a high-quality windshield made in America since 1993. You may also want to consider wind blockers and air dams to help effectively eliminate the wind drafts from above the windshield.