Smead Poly File Pocket, Straight-Cut Tab, 3-1/2" Expansion, Letter Size, Red, 4 per Box (73501) Use file pockets to keep large amounts of paperwork neatly organized and secure. Great for desk, drawer, shelf and on-the-go storage. Also ideal for use with storage boxes. Accordion style sides expand 3-1/2" and hold up to 400 sheets. File pockets take up minimal space, expanding only when extra storage capacity is needed. Made of tear proof and water resistant poly material for added strength and durability. Color code files for easy identification. Straight-cut tab provides a large visible labeling area. Includes 4 letter size (11-3/4" W x 9-1/2" H) poly file pockets with 3-1/2" expansion. Acid free and PVC free.