B (I)
• В (I grade): it almost hasn’t defects, allowed partially intergrown knots, black knots, loose knots, knot holes, wormholes in diameter up to 6 mm in amount of 3 pc/m2 are allowed. Allowed sound intergrown knots 5 pc/m2 up to 15 mm in diameter and insignificant number of dark streaks.
This plywood can be used in furniture and toys manufacture and be varnished.