Chart dividers sheets allow you to design your file indexing system without having to order custom chart dividers. These sheets are designed and outlined in black for easy placement of our chart divider tabs and made from a sturdy 110 lb index stock that comes in either white or manila. The sheets come pre-punched for top or side mount fasteners or 3-ring binders. 250 sheets per box. Also available in 140 lb white chart divider sheets with built in 1/2 pocket on one side for filing small documents. Sheet size: 8 1/2" x 11".