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Industrial Bulk Head Fitting
- 1/2" - needs a hole drilled no smaller than 1.5 inches.
- 1" - needs a hole drilled no smaller than 2.25 inches.
- 1.5" - needs a hole drilled no smaller than 3 inches.
- 2" - needs a hole drilled no smaller than 3 inches.
- 3" - needs a hole drilled no smaller than 4.5 inches.
- 4" - needs a hole drilled no smaller than 6 inches.