Frost King Window Insulation Shrink Kit 4 Pack 42" x 62" Indoor Save up to 35% on heating bills with this Frost King Window Insulation Shrink Kit. This 4-pack is designed for indoor use and features four individual sheets, each sized to fit standard windows. The kit includes plastic film sheets and double-sided tape, making it easy to install with a standard hair dryer. Perfect for keeping your home warm and energy-efficient during the colder months. #energyefficient #winter #window #home