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Box size for trees
| Box diameter | Maximum caliper range (inches) |
|---|---|
| 20 | 1.25-2 |
| 24 | 1.5-2.5 |
| 30 | 2.5-3 |
| 36 | 2.5-3.5 |
| 42 | 3-4 |
| 48 | 3.5-5 |
| 60 | 4-6 |
Source: American Standard for Nursery Stock, ANSI Z60.1
