Select - mixed sawing, the structure of the fibers is straight and wavy, a knot with a diameter of up to 10 mm is allowed, on the front side of the sapwood is not allowed.

Nature - a mix of Select and Rustic in a ratio of 50 to 50

Rustic - mixed cut, the structure of the fibers is straight and wavy, a knot up to 35 mm in diameter, sapwood is allowed to touch.

Country - mixed sawing, differences in tone between the slats, live and putty twigs up to 60 mm in diameter. The number of knots on the bar is not regulated. Sapwood is allowed up to 1/4 of the width of the bar.

Nature - mixed sawing, straight and wavy fiber structure, knot up to 30 mm in diameter, sapwood is allowed to touch.

Select - mixed saw, straight and wavy fiber structure, knots up to 10 mm in diameter are allowed, sapwood is not allowed.