8 1/2" x 14" - Red - 10% Recycled - 20 / BoxHanging file folders feature SureHook technology with revolutionary built-in tension springs to keep your folders on the rails and allow easy sliding. Both the rods and hooks are sturdier and stronger than those on standard hanging folders for lasting use. Folders feature a universal design to work with your existing hanging folder systems. Eco-friendly design is made with post-consumer material to minimize environmental impact.