Hammermill Copy Plus Multipurpose/Fax/Laser/Inkjet Printer Paper, Letter Size (8.5 x 11), 92 Brightness, 20 lb, Acid Free, Ream, 500 Total Sheets (105007) Sold as 500/RM. Multipurpose office paper works well in high-speed copiers, dry-toner plain-paper copiers, plain-paper fax machines and offset duplicators. Ideal for general copying, internal documents and backup hard copies. Good opacity allows minimal show-through from side to side. Flat, even surface allows consistent ink and toner receptivity for reliable performance. 20 lb. office paper is acid-free for archival use.