1. Pin knots up to 3 mm in diameter. GRADE:B - Allowed.
2. Healthy knots intergrown light GRADE:B - Allowed not more than 10 mm in size in an amount of not more than 2 pieces per 1 m2 of sheet surface.
Birch plywood 1525x1525 3mm BB/BB Russia FSC interior 5x5 5ft. 152.5
thickness mm: 3.
sheet width: 1525. sheet length: 1525.