The crystalfile extra file has a tough polypropylene construction which is designed to last up to 5 times longer than a standard manilla file the extra wide 30mm capacity means that the folder can take up to 300 sheets of 80gsm paper this pack contains 25 black foolscap files extra strong suspension files for durable filing polypropylene lasts up to 5 times longer than manila extra strong colour coded steel runners allow heavy loads printable tabs make labelling easy size foolscap 216x343