Keep files secure and organized with Pendaflex standard file pockets. These pockets utilize double-thick construction with a manila lining to help prevent damage to important documents while in storage. Double-thick manila-lined construction for durability. Letter-size (8 1/2 x 11 ) folders with 3 1/2 expansion to accommodate paperwork for ongoing projects. Redrope file pockets in a box of 25 to help you get organized. SFI Certified. Contains Recycled Content - See Specs for Details.