Natural ( B ) – This type of oak boards meet the highest standards, but unlike the Select type the limit of the amount and the size of the branches can be higher. Healthy branches can be up to 25-35 mm and the loaded ones by 15-25 mm. Allowable minimum amount of the sapwood is up to 5%. Natural, rare, minimum 20 mm long and 2 mm wide fissures are allowed at the ends. Different patterns have different shades of wood which makes the floor look natural and alive.
Thickness – su 4 mm ąžuolo sluoksniu 13 / 16 / 19 mm, su 6 mm ąžuolo sluoksniu 18 / 21 mm
Width – 140 / 160 / 180 / 220 / 260 / 300 mm
Length from 1200 mm to 2400 mm