Energy Saver - Reduces Heat and Air Conditioning Loss Around Storefront Doors Effectively Seals without Affecting the Door's Operation Available in 100 or 300 Foot Roll CRL Storefront Door Pile Weatherstrip is made of water-repellent pile woven onto a polypropylene backing strip, which inserts easily into the pile channel of commercial doors. Pile weatherstrip helps keep heated or cooled air from escaping around the door's frame, thus reducing energy loss. It will not affect the normal operation of the door and the medium gray color will match the finish of most commercial doors. Color: Gray Pile Height: .350 in (8.9 mm) Backing Width: .350 in (8.9 mm) Length of Roll: 100 ft (30.5 m)