Qty 500 5 Mil Double Letter Laminating Pouches 11-1/2 x 17-1/2 Hot Laminator Sleeves Insist on Authentic Oregon Lamination Premium  Laminating Pouches 500 pouches per case and includes at least 5 silicone coated carriers 11.5" x 17.5" (292mm x 445mm) and 125 microns per flap Clear glossy finish, 5 mils per flap, standard 1/8" rounded corners Heat activated thermal adhesive on polyester plastic film