Window Film Depot is a 3M Authorized Window Film Dealer & Security Glazing Manufacturer. We are a national supplier and installer of safety and security film products, including DefenseLite and BulletShield, our patented retrofit polycarbonate security solutions designed and tested for extra measures in glazing security. Window Film Depot services security professionals, government buildings, schools and institutions, building owners, national retailers, engineers, design/build firms, and ESCOs looking for affordable and sustainable installed film solutions across the U.S. (less)