OAK NATUR

Character: It features some bigger knots, and rather dynamic colors and graining but without harsh color variations, with lamellas having some tint variation. Only minor flame pattern is permitted. 
Knot: Healthy, well intergrown knots in sizes of up to 15 mm Ø, and black knots in sizes of up to 5 mm Ø are permitted, also in groups. 
Sapwood: Fundamentally, it is not permitted, but healthy tangential sapwood, up to 3 – 4 mm in width and 5 – 10 cm in length, is permissible