Grade I
Practically free from defects; partially intergrown, dead and loose knots, knot holes and worm holes with diameters not exceeding 6 mm and totaling 3 pcs. per 1 m² are allowed; also allowed are not more than 5 intergrown sound knots with a diameter of 15 mm per 1 m², and some minor brown vein lines. Varnished or not varnished. Used for the manufacture of laminated plywood.