Russian Birch Common grade lumber

Russian Birch ?#3 Common? grade lumber is manufactured and graded in accordance to National Hardwood Lumber Association (the USA) rules.Boards of this grade are used for manufacturing of furniture and moldings.Russian Birch ?#3 Common? boards are inspected from back face which must be qualified as a 3 Common grade with the reverse side (best face) graded as 3 Common or higher. Moisture Content: 6-8%Basic Yield: 33% of clear face cuttingsThickness: 25.4 mm (1 inch)Width: from 76 mm (3 inches) Length: from 1220 mm (4 foots) to 4880 mm (16 foots) with spacing 305 mm (1 foot)