Craig Frames B519 16x20-Inch Mat, Single Opening for 12x16-Inch Image, Soft Yellow with Cream Core MAT SIZE: This matting fits a 16x20 frame. (Frame not included) MAT OPENING SIZE: This mat opening displays a 12x16 inch photo/print/image. (Actual opening size is 11.5x15.5 inches) Soft Yellow color; smooth finish (minimal texture) Light cream core; white backing; pH neutral; 0.05 inch thick This listing includes (1) custom-cut, single-opening mat. (Please review outside dimensions and opening size before making purchase)