Walnut Burr / Burl - REAL WOOD Sheet - 440mm x 450mm (17.3 x 17.7 inches)
Width: 450mm. Also known as Walnut Burl, Californian Walnut Burr. The burr is only a "by-product", the actual purpose of the tree is to grow nuts. To this end gigantic walnut plantations have been set up.