Seal out the cold winter air and summer heat with the Duck Brand Heavy-Duty Door Shoe. This easy-to-install door shoe can be used year-round to block airflow and water from coming under doors. Made with durable materials to withstand heavy use the Duck Heavy Duty Door Shoe is ideal for high traffic exterior entry ways or for sealing off interior door ways. Use together with other Duck Brand weatherization products to make your home more comfortable and energy efficient all year long.