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Large works of art need generously sized mat boards. American Frame’s selection of oversized mat boards can be cut to a maximum of 38" x 58". These Bainbridge general purpose, 4-ply picture frame mats are available in our best-selling colors: white, off-white, black, charcoal, tan, grey and navy blue. Browse the collection and order up to five free samples to see how the mats pair with your artwork.