Select & Better – Generally uniform in appearance with minor color variations. Very few small knots and minor imperfections allowed. Mostly clear, reflecting the natural colors of the species.
No. 1 Common – Contains more prominent color variations. May have some small knots, mineral streaks and other characteristics naturally found in hardwood.
No. 2 Common – Has a rustic appearance. May have knots, checks and dark boards. Numerous sound variations of color, texture and grain.
No. 1 & 2 Common Mix – A mix of boards with characteristics of No. 1 Common and No. 2 Common.
Second & Better – A mix of boards including characteristics from all the grades.