NCCER Sheet Metal Duct Fabrication Standards (04204) HVAC and commercial construction contractors rely on duct fabrication standards to ensure code-compliant, efficient airflow systems across buildings. This credential covers spiral duct seaming, reinforcement techniques, and dimensional tolerances critical to preventing leaks and pressure loss. Professionals in mechanical contracting, facilities management, and industrial ventilation use these competencies daily.
| Exam Name | NCCER Sheet Metal Duct Fabrication Standards |
| Exam Code | 04204 |
| Format | PDF & Practice Test Engine |
| Target Year | 2026 Updated |
| Features | 100% Verified Q&As |
