Beech lumber standard quality, is a predominantly clean lumber.We accept 1-2 healthy knots, butt cracks as wide as the width of the piece and red heart in proportion 10-15.We do not accept insect holes, and rot.Density 720 kg / m3.. Se accepta 1-2 noduri sanatoase, crapaturi de capat cat latimea piesei si inima rosie in proportie 10-15 . Nu se accepta gauri de insecte, si putregai. Densitate 720 kg / m3.