DANUBE OAK NATUR

Character: Course texture and prominent grain having rather dynamic colors, with darker and lighter slats resulting from the natural growth of the tree, but without harsh color variations. It has large number of conspicuous medullary rays. 
Knot: Well intergrown knots, up to a diameter of 4-5 mm, are permitted. Dark knot is permitted, up to a diameter of 1 mm 
Sapwood: Prominent, conspicuous sapwood is not permitted. Discoloration caused by a frost rib is not permitted.