We are solid oak flooring manufacturer in Latvia founded in 1993. Solid Oak flooring details:Thickness 21mmWidth 120mm, 140mm, 160mm, 180mm, 200mmBoards supplied in random lengths of 800 to 2800mmTongue and grooved on all four sides Kiln dried to 8 plus/minus 2 %Unfinished, bevelled, planed, knots are filled with two component filler and twice sanded.Shrink wrapped packages: Each package contains 12 linear m of floorboards; the medium length of boards in a package is 1, 70m. Grade: NATUR/RUSTICThis grade is vibrant with plenty of life and colour, which adds traditional charm and warm look to your floor. It may contain knots up to 50mm, some sapwood (in 140mm and 120mm wide boards) and colour variation.