Heavyweight sheet is designed to run effectively through all your office equipment. ColorLok Technology for vivid colors, bolder blacks and faster drying time. 99.99% JAM-FREE and acid-free for archival-quality. Ideal for reports, proposals, newsletters and direct mail. This product was made from wood that came from a certified managed forest. Size: 8 1/2 x 11; Paper Color(s): White; Paper Weight: 24 lb; Sheets Per Unit: 2500.