ProSeal Garage Door Bottom Seals are made of durable, high quality weather resistant vinyl which remains flexible at extreme low temperatures while providing a tight seal for your garage door. Conforming to the shape of your garage door, ProSeal locks out the elements and helps save energy by keeping your garage warmer during the winter and cooler during the summer. Available in two sizes, 10'or 20'. Available in two styles. Trim to fit if necessary.