Autumn Birch
| Sapwood | Not allowed |
| Heartwood | 100% |
| Colour variation | Yes, must blend |
| Worm/sugar marks | 1/8" x 4", 6 per face |
| Worm holes | - |
| Mineral streaks | 1/4" x 4", 6 per face |
| End stain | Light, blending colour |
| Burls | 3/8", 10 (scattered) |
| Knots | Sound : 3/8", 8 (scattered) |
| Pin knots | 1/8", 8 per face |
| Bark pocket | Sound : 1/16" x 1 |
| Doze | - |
| Components | 3 1/2" to 5 1/2" (random) |
| Bark pocket | Sound : 1/16" x 1 |
| End splits/joints | 1/16" x 6", 6 (repaired) |
| Cracked grain | Not allowed |
| Rough cut | Light, to sand smooth |
| Birdseye | - |
| Matching | Spliced, random, plank look |
| Width | 50" (prior to trim) |
| Length | 99" (prior to trim) |
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Homeland Birch
| Sapwood | 100% |
| Heartwood | Not allowed |
| Colour variation | Yes, must blend |
| Worm/sugar marks | 1/8" x 4", 6 per face |
| Worm holes | - |
| Mineral streaks | 1/4" x 4", 6 per face |
| End stain | Light 10" both ends |
| Burls | 3/8", 10 (scattered) |
| Knots | Sound : 3/8", 8 (scattered) |
| Pin knots | 1/8", 8 per face |
| Bark pocket | Sound, 1/16" x 1" |
| Doze | - |
| Components | 3 1/2" to 5 1/2" (random) |
| Bark pocket | Sound, 1/16" x 1" |
| End splits/joints | 1/16" x 6", 6 (repaired) |
| Cracked grain | No |
| Rough cut | Light, to sand smooth |
| Birdseye | - |
| Matching | Spliced, random, plank look |
| Width | 50" (prior to trim) |
| Length | 99" (prior to trim) |
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