Smead 1-31 open accordion expanding file, 31 pockets, letter, leather-like redrope heavy-duty leather-like expanding files are virtually indestructable. Double thick front and back panels with heavy reinforced liner board for added durability. Tyvek reinforcement at the top and bottom for extra strength. Gussets extend into front and back panels twice as far as standard files. Choose from alphabetic (a-z), daily (1-31) or monthly (january-december) preprinted indexes. Expandable file folder type: indexed; open top file; size: letter; width: 12″; height: 10″. this product arrives to most customers in 2-3 business days.