Lettermark Inkjet, Laser Copy & Multipurpose Paper - White, Black - 92 Brightness - Letter - 8 1/2 x 11 - 20 lb Basis Weight - 75 g/m² Grammage - 1 / Carton - 2500 (500 - SFI - ColorLok Technology, Micro Perforated, Acid-free, Elemental Chlorine-free