3903 Backlit Film for Windows is a 7 mil, front-print polyester backlit film with a proprietary low tack self-adhesive. The special low-tack glue allows an easy, 100% bubble-free application and residue-free removal on glass and other flat surfaces. 3903 is designed specifically for compatibility with dye ink printers for indoor window applications or outdoor with the protection of an overlaminate and edge sealant.