A natural mix of grades giving a true representation of real wood. (Approx 70% "A&B" and 30% C grade)

"A&B" grade face allows slight to medium colour variations, live knots 20mm, dead knots below 5mm dark/black spots/streaks about 3mm x 5mm. Sap 10% of face area allowed.

"C" grade allows natural colour variation, line knots allowed, dead knots below 15mm, dark/black streaks 5mm x 10mm, putty filler may be used as long as the colour is similar to the overall tone of the wood. Sap 20% of face area allowed.