Cracks and gaps around windows and doors can cause drafts to come into your home, leading to high heating and cooling costs. Duck® Brand Storm Door and Window Replacement Weatherstrip Seals are made with durable and flexible material, allowing them to stand up against extreme temperatures that cause other seals to freeze or crack. Designed specifically for storm doors or windows, these replacement seals won't cause excess friction like traditional weatherstrip seals and form a barrier against the outdoor air, as well as dust, pollen and insects during the warmer months. Plus, they feature self-adhesive material for easy installation.