Processed chlorine free (PCF) paper is made using a 100% chlorine free manufacturing process, which is safer for the environment and aquatic life and is certified by the Chlorine Free Association. Made using 100% post-consumer recycled materials. Paper has a 20-lb basis weight with a 92 brightness making it ideal for daily use in copiers and printers. Acid-free for archival quality. Meets Air Force Regulation AF 164-117, JCP O-70, and Executive Orders 13514 and 13423.