Medium-size timber wood
Round timber wood made from trees with an upper diameter (without bark) of at least 5 cm and a lower diameter of up to 24 cm, measured in individual units, in individual units in groups or in stacks.
Medium-size timber wood is divided into four groups based on quality and dimensions:
a) S1 - log wood,
b) S2 - piled timber wood for industrial use,
c) S3 - round timber for industrial use,
d) S4 - fuelwood.