ProSeal U-Shaped Garage Door Seal with 1/4" T-End. ProSeal U-Shaped Seal with 1/4 Inch T-End are made of durable weather resistant PVC. The high quality vinyl remains flexible at extreme low temperatures, providing a tight seal for your garage door. ProSeal locks out the elements by conforming to the shape of your garage floor. Helps save energy, by keeping your garage warmer during the winter and cooler during the summer. Made from 100% PVC. Simple assembly is required. Dimensions: 10 Feet - 120"L x 1.875"W x 1.625"H; 1 lbs. 20 Feet - 240"L x 1.875"W x 1.625"H; 2 lbs.