Insulate your windows and doors with the Frost King Patio Door/XL Window Insulation Kit. This kit is suitable for both indoor and outdoor use and comes with a clear translucent window film that adds extra strength to your windows. The plastic material and 1.5 mil film thickness ensure that your windows are insulated from the cold weather, keeping your room warm and cozy. This window film kit is perfect for any room and is easy to install. The pack size includes one roll of 84" x 110" clear window film. The Frost King brand is known for its quality products, and this window film is no exception. Made in the United States, this extra strength window film is a great investment for your home.