3M™ Scotchcal™ Optically Clear Overlaminate 8914 is designed for use on all 3M™ Scotchcal™ Perforated Window Graphic Films.3M Scotchcal Optically Clear Overlaminate 8914 helps add an extra measure of long-term durability to sign graphics. When used with 3M-recommended products, this overlaminate provides durability to flexible, rigid, flat, and thermoformed sign faces, helping protect it from environmental elements. Help keep your graphics safe by using 3M Scotchcal Optically Clear Overlaminate 8914.