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Flexible Metal Conduit
| ขนาด (นิ้ว) | Inter Diameter (mm.) | Outside Diameter (mm.) | ||
| Min. | Max. | Min. | Max. | |
| 1/2" | 12.20 | 12.80 | 15.00 | 15.80 |
| 3/4" | 18.60 | 19.50 | 21.50 | 22.50 |
| 1" | 24.60 | 25.60 | 28.00 | 28.80 |
| 1-1/4" | 31.50 | 32.30 | 36.60 | 38.00 |
| 1-1/2" | 37.80 | 38.50 | 41.60 | 43.00 |
| 2" | 49.80 | 50.60 | 55.20 | 56.20 |
| 2-1/2" | 62.50 | 63.50 | 69.40 | 70.80 |
| 3" | 75.50 | 76.50 | 82.50 | 83.80 |
| 4" | 101.50 | 102.50 | 108.00 | 109.10 |
