Office Depot EnviroCopy 30 Paper, 8 1/2in x 11in, 20 Lb, 30% Recycled, FSC Certified, 500 Sheets Per Ream, 5 Reams, 40430 Designed for those who prioritize "green" above everything else 20-lb paper is ideal for everyday use. 104 (Euro), 92 (U.S.) brightness for vivid text and images. Acid-free paper won't yellow or fade over time. Meets the global standards of the FSC (Forest Stewardship Council). Forest Stewardship Council US-0081. FSC Certification ensures responsible use of forest resources and provides assurance that the fiber in this paper comes from forests that are well-managed to protect biodiversity and the livelihoods of the people that depend on those forests.