SELECT  grade:

Principle without knots and sapwood, sometimes small knots to approx 4mm allowed,natural colour variation are allowed. Mostly straight grains, half and regular flame, uniform color, no defects, sapwood, rarely small sounds knots up to 5 mm rarely. In some species as for example merbau, doussie, minerals are the natural characteristic of the wood and can not be taken as a claim.

NATURE+ grade:

With healthy knots to approx 10mm and principle without sapwood, natural colour variation are allowed. Flat and straight grains, natural discolorations, little sound knots max. 8mm, dead knots max. 5 mm, black vein marked in some species.

NATURE  grade:

with healthy knots to approx 15mm, but principle without sapwood, natural colour variation are allowed. Flat and straight grains, natural discolorations, little sound knots max. 8mm, dead knots

COUNTRY  grade:

with knots and to approx 15-20% sapwood, natural colour variation are allowed.

Evident discolorations and grains structure, dead knots max. 15 mm, rarely sapwood and cracks, false heartwood. Biodegradation not allowed, except blue stains and insects galleries.