Dimensions (solid floorboards):
15\16*100*400-1400mm (ash\ thermo-ash\ oak)
15\16*120*600-2000mm (ash\ thermo-ash)
15\16*150*600-2000mm (ash\ thermo-ash)
Surface: brushed \ smooth
Finishing: UV-varnish \ natural oil \ unfinished
Thickness of prefinished planks – 15mm and 20mm.
Thickness of unfinished planks – 16mm and 21mm.
Grades of wood (ash):
Crystal — laths of soft colors in shades of bright ash. Permitted sound knots up to 3 mm in diameter. Sound sapwood and checks do not occur.
Prime — laths of soft colors in shades of dark ash. Permitted sound knots up to 3 mm in diameter. Sound sapwood and checks do not permitted.
Extra — laths of different colors characteristic of ash wood. Permitted sound knots up to 5 mm in diameter at the level of grain. Sound sapwood does not occur. Acceptable shallow surface cracks (up to 0.5 mm deep) occasionally.
Decent — permitted sound knots up to 18 mm diameter and black knots to 20 mm diameter. Colors in the classification of sorts are excluded. Surface cracks with a depth of 1 mm. Cracks leading permissible shallow and not very visible.