With a 30mm width and tough polypropylene construction the extra lateral file is the solution for all of your heavy duty filing lasting up to 5 times longer than a normal manilla equivalent the polypropylene material allows you to be sure that the file wont deteriorate even if you are using it heavily the base and the bars are both reinforced to provide strength and protection from damage meaning that you can comfortably file your heaviest documents without worry about damage and loss d