
European Oak
Prime SD/BIS
Face A:
- No defects, allowed sound clear knots up to 10-12 mm diameter
- No sapwood
- Elements composed in harmony of blend and grain, with possible light discolorations and light darker shades allowed;
- Mix of grains crown cut / quarter cut / half crown cut
Face B:
- Eventual traces of sapwood are allowed up to 20% of surface
- Eventual sound knots up to 25 mm diameter are allowed
- For quality C, sapwood is allowed without limitations, and knots can reach 40 mm diameter