Craig Frames B222 24x36-Inch Mat, Single Opening for 20x30-Inch Image, Smooth White with Cream Core MAT SIZE: This matting fits a 24x36 frame. (Frame not included) MAT OPENING SIZE: This mat opening displays a 20x30 inch photo/print/image. (Actual opening size is 19.5x29.5 inches) White 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)