A matboard, sometimes referred to as a mat, is a cardboard-like material, which sits between a frame and your photograph or artwork to give it a more finished ...
12 Sets White Picture Mat Set, 5 x 7 Inch, 8 x 10 Inch, 11 x 14 Inch Display Photo Frame Mat with White Core Bevel Cutting Mat Board and 20 Transparent Bags
"Picture Framing - Matting" Listings in New York, NY