The Epson Enhanced Matte Double Sided Posterboard A3+ is designed to give a smooth white matte professional finish & is for photographers seeking a flat matte surface. The Epson enhanced matte posterboard is 1.3mm thick cardboard with bright white ultra-smooth matte finish for professional enlargement & presentation. Now photographers & Graphic Designers will be able to produce high quality photographs & images with a matte photo-like finish utilising both sides of the media.