Description of the quality
- Knots till ± 60 mm.
- Black knots till ± 30 mm.
- Closed hearth is allowed.
- A small line of sapwood of ± 10 mm can occur on ± 20% of the lamellas.
- Inbark till ± 100 mm is allowed.
- Rouge and wormholes are not allowed.
10% of the pieces can slightly deviate from above description.