TuffCoat Extreme White Matte Polypropylene label stock 3" wide by 2.5" long. Equivalent to 914 labels. Biaxially Oriented Polypropylene (BOPP) is a polypropylene film that has been stretched in both the machine and cross directions. BOPP film has become one of the most popular, high growth films in the world. For use with LX810 only.