Gila 3-in-1 Heat Control Window Film is an intelligently-designed heat control window film that will transform your windows. It combines advanced heat- and glare-rejecting technologies with low-reflectivity material to create a product that is effective and nearly invisible. This adhesive-based film is engineered to provide a fast, easy installation that adheres firmly to flat glass surfaces. No need for professional installers-this film is hassle-free and perfect for DIY (Do It Yourself) projects. The film reflects UV rays while allowing in natural light and maintaining your view of the outside. It's energy-efficient, too. Blocking heat can lead to lower cooling costs and increase comfort in rooms with direct sunlight.. For best results use the Gila Complete Window Film Application Kit. Typically applied to the interior window surface. EASY INSTALL, LASTING RESULTS: Durable adhesive material is easy to handle and firmly sticks to windows for ongoing benefits. NEARLY INVISIBLE: Our best optical clarity as compared to other Gila Heat Control window films. LOW REFLECTIVITY: Ideal for homeowners or associations that prefer a non-mirrored exterior look. INSTALLATION TOOLS SOLD SEPARATELY: The Gila Complete Window Film Application Kit (Item RTK500SM) is recommended to complete your DIY window film project needs. PROTECTS INTERIORS: Blocks up to 99% of UV rays, helping to keep your interior from fading. ADDS COMFORT AND EFFICIENCY: Rejects up to 59% of total Solar Energy and reduces glare up to 72%, making interiors cooler and more comfortable. COVERS UP TO 3 WINDOWS: 36 in. x 180 in.. Film also provides superior optical clarity