Hanging folders made of 240gr acid-free cardboard reinforced with cotton fibers. Hence a lifetime warranty on these hanging folders. Very suitable for intensive use. Complies with ISO standard 9706. With metal hangers with coated ends. Includes polypropylene riders and rider strips. The rider strips can be personalized free of charge at www.elbaprint.com. Size folio 240x345mm and a rail spacing of 365mm.