Frost King's Brush Pile Weatherseal is designed for storm doors or windows. This replacement seal won't cause excess friction and stands 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. It's made with durable and flexible nylon material; allowing it to stand up against extreme temperatures that cause other seals to freeze or crack. Additionally, it features self-adhesive material for easy installation.