Expanding file offers a vertical design to make finding papers easier than ever. Tabs on the 12 pockets are preprinted with the months from January to December for monthly filing. Secure your letter-size papers with the full flap with elastic closure. Vertical Reinforced Expanding File expands 3-1/2" to accommodate all your important documents. Durable, acid-free, red fiber material features rip-proof gussets for durability.