Select Grade and Classic Grade
Known as either Select grade or Classic grade,this will have a mix of almost prime boards with other planks which have more knots. Slightly larger knots are allowed in this grade. Heartwood and color variation in the wood should be expected and there may be some checks (cracks across the growth ring), sapwood and filler. The color of the filler is carefully selected to complement the wood rather than to match it exactly and it may vary from batch to batch.