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Pack of 20 16x20 WHITE Picture Mats with White Core Bevel Cut for 11x14 PicturesThis item comes with 20 16x20 single mats
Inside (opening) Size: 10.5x13.5 (bevel cut), Color is WHITE
White core and 4-ply thick (about 1.4 mm or 1/16 inch)
THIS ITEM DOESN'T INCLUDE BACKING BOARD.