Birch Lumber

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DESCRIPTION

Thickness : 25mm // 32mm // 38mm // 43mm // 50mm // 60mm
Width : 80 and up // 100 and up
Length : 300-950mm // 1000-1700mm // 1800-2000mm // 2100-2400mm // 2500mm and up

Elements
25x25mm // 32x32mm // 38x38mm // 43x43mm // 50x50mm // 60x60mm
Length : 300-550mm // 600-800mm // 850-950mm

Tolerances:	-0.0mm, +2.0mm on thickness -0.0mm, +4.0mm on width -0.0mm, +10.0mm on length
Moistness:	fresh cut or KD 6..14%
Volume:	up to 600 cbm/month
Quality Requirements:
Grade “A”	4 sides clear without any defects false heartwood not allowed
Grade “B”	3 sides clear up to 2..3 knots with max. diameter 15mm per running meter allowed only on bottom face false heartwood not allowed
Grade “C”	1..3 faces clear up to 2..3 sound knots with max. diameter 15mm per running meter allowed only on bottom face false heartwood on bottom face is allowed up to 50% of the thickness of the element
Grade “Rustic”	up to 2..3 sound knots with max. diameter 40mm per running meter allowed on both faces up to 1..2 dark knots with max. diameter 25mm per running meter allowed on both faces false heartwood allowed without limitations
General Requirements:	rot, insects, wormholes not allowed face, end and edge cracks not allowed ring shakes not allowed