During the cold weather months, windows become a prime spot for energy loss. Indoor Duck® Brand Roll-On® Window Kits create an added barrier between the outdoor air and your home's inside, helping to block drafts and air leaks that lead to high heating costs. Patented Roll-On® film comes with a pre-taped edge for easy roll-on application, requires no measuring and fits snugly to indoor window frames to provide an airtight seal. Plus, they are made with clear shrink film for good visibility and are easy-to install and remove once the warmer weather arrives. Use together with other Duck® Brand weatherization products to make your home more comfortable and energy efficient all year long.