Fresh cut unedged birch:

Quality: AA,AB, BC

- Thickness: 25(28);32 (35);38(42);50(54)mm

- Width: min 110 mm

- Length: mainly 3000 (+50-100) mm (but possible from 1000 mm)

Kiln dried unedged birch:

Quality: AA,AB, BC

- Thickness: 25;32 ;38;50mm

- Width: min 100 mm

- Length: mainly 3000 (+50-100) mm (but possible from 1000 mm)

- KD: 8-10 %

Kiln dried edged birch:

Quality: E,A,AB, BC

- Thickness: 25;32 ;38;50mm

- Width: 50;75;100;125;150 mm

- Length: from 300 mm

- KD: 8-10 %

Frame grade:

Main measures:

- Thickness: 25 mm

- Width: 50;75;100;150;175;200 mm

- Length: 600 – 3200 mm

KD: 16-18%

Possible to have calibrated frame grade !