Easily seal cracks and gaps around windows and doors with the DUCK BRAND® Large Weatherstrip Seal. Designed to help prevent drafts that can lead to high heating and cooling costs, this weatherstrip seal can also be used to form a barrier against dust, pollen and insects during warm months. Made from durable, flexible material that stands up to the most extreme temperatures that cause other seals to freeze or crack. Use together with other DUCK BRAND® weatherization products to make your home more comfortable and energy efficient all year long.