WSi = Residential visual quality

ISi = Industrial visibility quality

NSi = Industrial quality

for the visible living area

for industrial and commercial construction

for structural solid wood construction

• Visible layer max. width of 140mm Surface sanded
• Wood moisture 12 % (+/-2 %)
• Knots, discolourations and joints occasionally permissible

• Visible layer max. width of 160mm Surface sanded

• Wood moisture 12 % (+/-2 %)

• Knots, discolourations and joints occasionally permissible

• Wood moisture 12 % (+/-2 %)
• Knots, discolourations and joints permissible