Species Grading

Grade Chart	White Oak	Red Oak
Clear Practically free of defects, made up mostly of heartwood. Most uniform color, with limited small character marks.
Select Almost clear, with more of the normal characteristics such as knots and color variations. Unlimited sound sap wood (lighter in color).
No. 1 Common More markings than clear or select. Light and dark colors, knots and other character marks provide a variegated appearance. Often selected because of their natural, rustic appearance.
No. 2 Common The most knots, imperfections and color variations. A natural looking, economical floor after knot holes, checks and other imperfections are filled and finished.