Hammermill"s most popular paper among large offices and in-plant shops where dependability is critical. Helps eliminate misfeeds internal jams and uneven stacking which means less downtime service calls and missed deadlines. So reliable it has a 99.99% jam-free guarantee. Acid-free for archival quality. Paper Color(s): White Paper Weight: 20 lbs. Sheets Per Unit: 5000 Rolls Per Unit: N/A.Unit of Measure : Carton