| Feature | Permissible Feature |
| Tight knots | Not exceeding 50mm or 3/8 of the surface on which it occurs |
| Loose knots | As for holes |
| Holes | Pin hole unlimited
Other than pinhole, largest dimension Not exceeding 3mm Exceeding 3mm and not exceeding 10mm 3 per 1m of board length Exceeding 10mm, not permitted |
| Slope of grain | Not exceeding 1 in 8 |
| Tight gum veins | Quarter sawn: surface width measured across feature, not exceeding 5mm
Backsawn: |
| Loose gum veins | Not one surface to another
Not intersecting an end Surface width measured across the feature, not exceeding 3mm Agg. length not exceeding 1/5 of the length of the piece |
| Gum pockets, latex pockets and overgrowth injury | Not one surface to another
Surface width measured across the feature, not exceeding 15mm Length not exceeding 75mm Depth not exceeding 2mm when backsawn |
| Knot checks | Width not exceeding 3mm |
| Checks other then internal | Width not exceeding 2mm |
| Stain - Natural Discolouration - Other discolouration inc. sticker marks |
Unlimited
Not permitted |
| Black speck | Unlimited |