Neenah Paper Exact Index Cardstock, 8.5" x 11", 90 lb/163 gsm, White, 94 Brightness, 1000 Sheets, 4 Pack (40311) 90 lb. Index card stock 250 sheets of white cardstock with 94 brightness rating; 8.5" x 11" Acid and lignin-free for longer lasting documents Copier, inkjet, and laser printer guaranteed for hassle-free performance Ideal for long-lasting letterheads, brochures, table tents, documents, menus, and more