This letter-sized 3-Ring Binder Pouch measures 9-1/8 in. x 11-1/4 in. and is sized to laminate items measuring up to 8-1/2 in. x 11 in. This pouch has a side extension with three holes that allow reference documents to be laminated and inserted in a standard 3-Ring Binder for protection and durability. Our 3-Ring Binder Pouch features 5 Mil laminate per side, and a 10 Mil finished thickness, with rounded corners. Lamcraft uses the finest laminate materials available, made in the U.S.A. This item comes 100 to a carton and offers quantity discounts.