Cohas Slate Food and Cheese Platter or Art Board includes 3 Medium 8 by 12 Inch Boards, Drilled Gray Slate Set of 3 drilled slate food and art boards perfect for homes, bars, restaurants, or at events Real slate boards are great for using as unique serving platters, art or message boards, and more Slate boards measure 8 by 12 inches each; mined and split in New England. Can be used with liquid chalk marker or real chalk Natural gray colored slate can be coated in vegetable oil for use in food service, or sprayed with acrylic overcoat when used as art surface Warranty information is available on the manufacturer's website; contact manufacturer directly for issues or concerns with product. 8 x 12  Undrilled Gray Slate, Includes 3 slate boards and no marker 9 x 18 - Single slate board with white waterproof semi-permanent marker 12 x 16- Single slate board with white waterproof semi-permanent marker 14 x 22- Single slate board with white waterproof semi-permanent marker View our full line of Slate products in the Cohas Amazon Store by clicking the Cohas Brand Real slate mined in a New England Quarry Beveled edge comes from trimming process after raw slate ismined Rustic, textured front; some variations in texture and color are common Back can feature knots and rougher surface and texture 100%-real American slate; no import or synthetic substitute Due to nature of slate, each piece will look different from next Product is &#034;Slate Gray&#034; in color, while variations occur they will not be large color variations Variations in size, texture, thickness, color, and weight will occur Thickness ranges from 1/4 to 3/8 inch on the slate Slate meets the ASTM* C406 Standard, rated S1 Grade S1 has an expected Service life of more than 75 years outdoors This long life is due to the minimum water absorption, maximum weather resistance and flexural stability of Cohas slate products (ASTM* C121, C217 and C120)