D Select & Btr
The Top grade available. It is the only EWP grade where the number of knots on a piece is limited. Uses include: fine woodworking, interior trim.
#1, #2 Common
Is an appearance grade with sound tight knots. Common uses are panelling, furniture.
A highly knotty appearance grade. Common uses: furniture, paneling, shelving, coffin making
A serviceable grade primarily used for industrial uses, including crating and boxing.
Industrial / #5 Common
Lowest common grade - for industrial uses.