Expanding file pocket features a heavy-duty construction that's made from 17 point, red fiber stock to provide extra durability for your files that are frequently referenced. Reinforced, tear-resistant gussets extend 7/8" into the panels for increased strength in the vulnerable areas. Expandable design keeps your growing collection of files and documents in one easy-to-reference location. Closed sides keep your small, loose items contained to prevent losing important items. File pocket with a full tab is designed to hold up to 1,050 sheets of legal-size paper.