C Select: This is the best grade of pine boards. It is mostly clear, although some knots are allowed. Within this grade there are pieces with no knots.
D Select: This is the lower end of the #1 Select pine boards. It has lots of clear material with well spaced black and red knots.
Finish: Excellent appearance; knotty grade with several scattered sound, tight, small knots. Cost effective grade for painting or a nice clear natural look.
Premium: Nice red knotted lumber with very few black knots. Excellent grade for a quality knotty pine look.
HE Standard: Very knotty in appearance, with larger red knots. This grade allows for more black knots. Great for a really rustic look.

