Quill Multipurpose Copy Laser Inkjet Paper, 8 1/2 Inch x 11 Letter Size, 20 lb., 92 Bright White, Acid Free, Ream, 500 Total Sheets (720222) One single ream (500 Sheets), 8.5 x 11" Letter size 92 bright white; 20lb density (the most common paper weight) Perfect for everyday use. Compatible with most office machnes, copiers, laser and inkjet printers, and plain paper fax machines Features consistent weight, thickness, moisture level, and "curl control" for fewer copier jams Good contrast for greater readability; Acid free for archival quality