Craig Frames B161 14x20-Inch Mat, Single Opening for 11x17-Inch Image, Granite with Cream Core MAT SIZE: This matting fits a 14x20 frame. (Frame not included) MAT OPENING SIZE: This mat opening displays a 11x17 inch photo/print/image. (Actual opening size is 10.5x16.5 inches) Granite 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)