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Drilled Hole Size For Bulkheads | |
1/2" | 29 millimeter or 1 1/8" |
3/4" | 39 millimeter or 1 1/2" |
1" | 45 millimeter or 1 3/4" |
1 1/2" | 62 millimeter or 2 3/8" |
2" | 77 millimeter or 3" |