Heavy-duty file pockets expand to give you the room you need for growing projects. Reinforced, tear-resistant gussets extend 7/8" into panels. Front panel folds down so you can access papers easier. Pocket design with closed sides protects contents. Straight-cut, end tab is perfect for use in end-tab shelving systems. Letter-size pockets are made of extra heavy-duty, acid-free, 17 point red fiber stock. The 5-1/4" capacity holds up to 1,050 sheets.