Professional media measuring 11.7 x 17.9, 20 sheets per pack, is ideal for creating long lasting, photographic color outputs, generating prints with a life expectancy comparable to those processed in a photo lab. Lightfastness rated at 10 years before noticeable fading occurs, under a glass frame in normal indoor fluorescent lighting, when using genuine EPSON ink cartridges and EPSON Premum Photo Glossy Paper or Photo Paper; 15 years before fading occurs using genuine EPSON ink cartridges and EPSON Matte Paper Heavyweight. Results will vary depending on lighting conditions, humidity, color intensity, color range and print media. Water resistant prints are produced using Genuine EPSON ink cartridges and EPSON Premium Glossy Photo Papers or Photo Papers. Basis weight: 255g/m2. Opacity: 97%. ISO brightness: 92%. Thickness: 10 mil (0.256 mm). Contents: 20 sheets per package.