Custom Ductwork
Fabricated to fit the building.
In-house sheet-metal fabrication and installation for new work, retrofits, equipment transitions, and field conditions that demand a precise fit.
Service Overview
Field-fit duct systems without passing responsibility around.
Commercial ductwork has to fit structure, equipment, ceilings, access, fire protection, electrical, and the work of every other trade sharing the same space.
Seneca fabricates and modifies ductwork in house, keeping field dimensions, production, installation, and system performance with one accountable mechanical team.
What This Covers
Complete capability. One accountable team.
Scope is shaped around the facility, equipment, operating requirements, and work already in motion.
- 01
New commercial duct-system fabrication
- 02
Equipment transitions and curb adapters
- 03
Retrofit duct modifications
- 04
Exhaust and ventilation ductwork
- 05
Field-fit offsets and connections
- 06
Duct replacement and repair
Shop and field working from the same conditions.
In-house fabrication shortens the communication path when dimensions change or a connection needs to be resolved. The same team owns the fit and the finished installation.
How We Work
A clear path from first look to turnover.
- 01
Verify the field
Confirm dimensions, equipment connections, structure, routing, access, and trade conflicts.
- 02
Lay out the system
Translate airflow and routing requirements into buildable fittings, joints, supports, and transitions.
- 03
Fabricate in house
Build the required pieces with direct communication between the shop and installation team.
- 04
Install and verify
Set, connect, seal, support, and coordinate the finished system for reliable airflow.
Applications
Built for real operating environments.
Commercial work demands access planning, coordination, documentation, and an installation that remains serviceable after the project is complete.
- 01Supply & return duct
- 02Equipment transitions
- 03Curb adapters
- 04Ventilation systems
- 05Exhaust ductwork
- 06Retrofit modifications
Markets served
- Commercial
- Healthcare
- Industrial & Energy
- Infrastructure
- Institutional
Start the Conversation
Built to Perform. Your Next Project Starts Here.
Whether your facility needs a repair, a planned retrofit, or a complete new installation, a direct conversation with Seneca is the best place to start. Tell us about the building, equipment, and timeline—our team will help define the next move.