SKILCRAFT Heavy-Duty File Folders, With 1 Fastener, Straight Cut, Letter Size, Kraft, 30% Recycled, Pack Of 100 (AbilityOne 7530-00-926-8978) - Heavy-duty file folders expand to 3/4" and have a plain, folded bottom for easy use. The folders are letter-size, 8 1/2" x 11", with straight-cut sides for uniformity and a durable kraft design.