FishArtist: Yuheng Duan Fine Art Paper Printing and framing Epson Fine Art Paper: 300g, 17 mil, which gives you the highest resolution and colour saturation possible Museum quality materials for mounting and framing Mat: 2. 5" mat border for small, medium and large sizes. Shadow box: 2'' fine art paper border for the size of Giant and Collector(no mat). It make a photograph more definitive by adding extra depth between the artwork and the acrylic glass.