CustomPictureFrames.com Mat Board Center, Pack of 10 3/16 BLACK Foam Core Backing Boards (16x20

14x18 Mat for 16x20 Frame

Golden State Art, Pack of 10, 3/16 Thick, 11x14 Black Foam Boards (11x14, Black)

Picture Frame Mats, Pre Cut Mat Board

Custom Matboards

USA, Glossary Of Picture Framing Terms

PACKAGE: Pack of 10 black uncut photo mat boards/ matboards. DIMENSION: 16 x 20 inches (fits a 16x20 frame). THICKNESS: 4-ply thick (1.4 mm or 1/16

Mat Board Center, 10-Pack Backing Boards - Full Sheet - for Art, Prints, Photos, Prints and More (Black, 16x20)

CustomPictureFrames.com Mat Board Center, Pack of 10 3/16 BLACK Foam Core Backing Boards (20x24, BLACK)

Economy Black Core Pre Cut Picture Mats and Boards

Mat Board Center Crescent 11x14 Black Picture Mat Sets for 8x10 Photo.

How to Insert Your Photos Into a Matted Photo Frame - Our Step-by-Step

16x20 Canvas Frame