Mohawk 54301 Copier 100% Recycled Paper, 94 Brightness, 28lb 8-1/2x11, PC White, 500 Sheets Sold as 1 Ream. Guaranteed to run on laser printers, inkjet printers and high-speed copiers. Mohawk supports the use of non-polluting wind-generated electricity through the purchase of Green-e certified Renewable Energy Certificates (RECs) from wind power projects. Today, 100% of the electricity used in Mohawk's operations is matched with RECs. Acid-free for archival quality.