Approximately 60% QSA (see description in the QSA tab) and 40% QS1 (description below):
Standard sizes:
Thicknesses: 18, 20, 27, 34, 41, 45, 54, 65, 80 and 100mm
Lengths: 2m, 2m20, 2m50, 3m and 3m50
Width: 25 cm and more
– Sound knots of less than 5mm,
admitted in number less than 8
– Admitted with volume reduction:
1. one loose or rotten knot
or rotten knot less than 25 mm,
2. one isolated knot less than 20% of the
of the width of the board,
3. rolling, frostbite, bark gap,
altered sapwood if isolated, brown heart
less than 25%, sapwood pitting.
4. Straight splits and cow’s-tail
Is excluded: lunure
