| weld shop exhaust ventilation system | 1.76 | 0.6 | 9691 | 36 | 29 |
| welding shop ventilation system | 1.93 | 0.8 | 1445 | 31 | 16 |
| welding shop exhaust system | 1.3 | 0.3 | 8996 | 27 | 63 |
| welding shop ventilation design | 0.51 | 0.7 | 1607 | 31 | 56 |
| ventilation for welding shop | 1.83 | 0.8 | 4463 | 28 | 35 |
| local exhaust ventilation in welding | 0.33 | 0.5 | 5663 | 36 | 51 |
| shop exhaust ventilation system | 1.1 | 0.2 | 3833 | 31 | 48 |
| welding ventilation movable exhaust hoods | 1.43 | 1 | 264 | 41 | 20 |
| welding fumes exhaust ventilation systems | 1.85 | 0.9 | 4132 | 41 | 84 |
| welding exhaust system design | 1.36 | 0.7 | 6416 | 29 | 68 |
| industrial welding exhaust system | 0.67 | 0.5 | 5469 | 33 | 20 |
| ventilation systems for welding | 0.45 | 0.5 | 2403 | 31 | 16 |
| welding shop exhaust fan | 0.02 | 0.4 | 8864 | 24 | 38 |
| exhaust ventilation systems for shops | 1.51 | 0.4 | 7804 | 37 | 42 |
| shop exhaust venting systems | 0.71 | 0.9 | 2922 | 28 | 63 |
