Gila Privacy Mirror Window Film features advanced technology and highly-reflective material on the exterior to provide superior daytime privacy while maintaining your view of the outside. This film does not offer nighttime privacy-when it's dark outside and lights are on inside, the film no longer conceals views. In addition to privacy, Gila Mirror Window Film also blocks heat, reflects UV rays and reduces glare for increased interior comfort. With the Gila Complete Application Kit, How-To videos and Tips, the film is hassle-free to install and perfect for weekend DIY projects. Features: COVERS UP TO 3 WINDOWS: 36 in. x 180 in. (45 sq. feet) ENERGY EFFICIENT: Rejects up to 79% of total Solar Energy PROTECTS INTERIORS: Blocks up to 99% of UV rays, helping to keep your interior from fading INCREASED COMFORT: Reduces glare up to 82%, making interiors more comfortable EASY INSTALL, LASTING RESULTS: Durable adhesive material is easy to handle and firmly sticks to windows for ongoing benefits INSTALLATION TOOLS SOLD SEPARATELY: The Gila Complete Window Film Application Kit (item RTK500SM) is recommended to complete your DIY window film project needs