Extreme White Matte Polypropylene label stock 4" wide by 6" long. Equivalent to 325 labels. (No perforation) Please note: 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 LX600, LX610, LX800, LX810, LX900, LX910, LX1000, LX2000, and LX3000 only. Not for use with LX400, LX500 and RX500.