Pendaflex Letter Recycled Expanding File

8 1/2" x 11" - 3 1/2" Expansion - Red Fiber - Reinforced Gusset, Rip Proof Gusset, Flexible, Laminated, Moisture Resistant - 10% Recycled - 5 / Box. Plastic hooks swing out to file on rails and swing down for active use. Double-reinforced, rip-proof, spun-polyester gussets are strong and flexible.