Oregon Lamination Premium 12-1/4 x 17 inch A3 size thermal laminating pouches are top 15% high clarity world rated after adhesive is heat activated. The clear glossy finish protects and enhances colors. 3 mils thick per flap is the thinnest standard laminating pouch on the market and works in 99% of all hot pouch laminators on the market today. 3 mil laminating pouches keep images the most true to size too. These laminating pouches have small radius rounded corners for a professional finish. To leave a clear border of laminate around your sheet, we recommend no larger than 12 x 16.75 size paper to allow or the sealed edge and rounded corners. This size works nicely for A3 size sheets, signs, menus, notices and more. Oregon Lamination Premium brand is among industry leaders in providing the best laminating supplies quality for a reasonable price. Our laminating pouches provide the lowest price with highest value for quality plastic laminating supplies with heat activated adhesive compatible in all thermal pouch laminators capable of sealing 3 mil 12.25 x 17 laminating pouches. Oregon Lamination Premium laminating pouches have not been setting on the shelf for years. This means the adhesive may melt faster than expected, which means possible faster running times or somewhat lower temperatures may be used. Oregon Lamination laminating supplies are manufactured to stringent specifications designated by actual users of the product to achieve the best clarity with the least defects. Oregon Lamination Premium laminator pouches come with a money back guarantee. Thank you for considering Oregon Lamination Premium laminating sleeves, designed by people who do laminating for a living. Look for the authentic purple & white label to insure you receive authentic Oregon Lamination Premium products. LAMINATING TIPS: Industry standard specification for 3 mil laminating pouches is 3 mil on each flap for a total of 6 mils added to your paper and 1 mil equals 1/1000th of an inch.