Translucent films are designed to be illuminated by an artificial light source such as fluorescent lamps or LEDs, making them perfect solutions for any internally illuminated sign project such as box signs or channel letters. The 8500 series is specially designed for producing long-term illuminated signs on rigid or flexible surfaces. This 3 mil, 7-year outdoor durability film has a silicone-coated paper with a blue liner and is thermal print compatible. Tip: Avoid cleaning acrylic surfaces with alcohol. Use a mild detergent and water solution. Glass and surface cleaners can leave a residue that may cause poor adhesion. When ordering a colored product, please make your selections based on how color appears in the appropriate color chart.