Process exhaust duct
Large-bore duct is our specialty.
At Harris & Hart, large-bore duct fabrication is a core capability. From our 55,000-square-foot facility in Ogden, Utah, we fabricate large-diameter duct systems to meet the demanding requirements of semiconductor fabs and advanced manufacturing facilities.
Our fabrication capabilities range from 2-inch to 172-inch diameter duct, including both galvanized and stainless-steel systems. When a project calls for specialized materials or applications, we also maintain established fabrication and procurement partners for coated stainless steel and FRP systems, giving our customers access to a broader range of solutions while maintaining a single point of coordination.
From large-diameter duct and complex headers to exhaust stacks, laterals, and rooftop runs, our teams take projects from BIM detailing and coordination through fabrication and field installation.
Capabilities- Large-diameter round and rectangular duct
- Galvanized and stainless-steel duct systems
- Dampers, taps, reducers, and supports
- Coated stainless-steel procurement and fabrication partners
- FRP procurement and fabrication partners










