1-833-487-8387 Flex-Duct Specifications - Fume Collection Weld Fume
| Dia (in.) | Positive (in. w.c.) | Negative (in. w.c.) | *Bending radius (in.) | Weight (lbs./ft.) |
| 2.50 | 237 | 76 | 1.56 | 0.3355 |
| 3.00 | 189 | 56 | 1.80 | 0.4026 |
| 3.50 | 143 | 40 | 2.16 | 0.4026 |
| 4.00 | 121 | 32 | 2.40 | 0.4026 |
| 4.50 | 104 | 26 | 2.64 | 0.4697 |
| 5.00 | 84 | 20 | 3.00 | 0.5368 |
| 5.50 | 70 | 16 | 3.36 | 0.5368 |
| 6.00 | 63 | 14 | 3.60 | 0.6039 |
| 6.40 | 56 | 12 | 3.84 | 0.6039 |
| 7.00 | 49 | 10 | 4.20 | 0.6710 |
| 8.00 | 40 | 8 | 4.80 | 0.8052 |
| 9.00 | 33 | 6 | 6.32 | 0.9394 |
| 10.00 | 28 | 5 | 7.00 | 1.0736 |
| 11.00 | 24 | 4 | 7.72 | 1.2749 |
| 12.00 | 21 | 4 | 8.40 | 1.4091 |
| 13.00 | 18 | 3 | 9.12 | 1.4762 |
| 14.00 | 16 | 3 | 9.80 | 1.6775 |
| 15.00 | 14 | 2 | 10.52 | 1.9459 |
| 16.00 | 13 | 2 | 11.20 | 2.0801 |
| 18.00 | 11 | 2 | 14.40 | 2.4156 |
| 20.00 | 9 | 1 | 16.00 | 2.7511 |
| 22.00 | 8 | 1 | 17.60 | 3.0866 |
| 24.00 | 7 | 1 | 19.20 | 3.4221 |
| 28.00 | 6 | 1 | 22.40 | 4.0260 |
| 32.00 | 4 | 1 | 25.60 | 4.6299 |
| 36.00 | 4 | 1 | 28.80 | 5.2338 |