Designed for storm doors or windows, these replacement seals won't cause excess friction and stand up against extreme temperatures. Cracks and gaps around windows and doors can cause drafts to come into your home, leading to high heating and cooling costs Frost King Brush Pile Weatherseal is made with durable and flexible nylon 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 cold or warm outside air, as well as dust, pollen and insects. Additionally, they feature self-adhesive material for easy installation. Color: Black.