We can fabricate all types of ductwork and can deliver to your project. Duct organized, labeled, wrapped and ready for installation. Send us your drawings and we can estimate your specific project needs. Contact us today for your duct requirements.

Duct-supply, a division of Louisiana CSI fabricates rectangular and spiral duct for commercial, industrial and residential HVAC systems. Buy manufacturer direct for competitive pricing on duct products made from American sheet metal. For estimates call 225-343-9125 or email sales@la-csi.com for product catalog.
Staff and Fabrication Team
During these challenging times, our team has continued to work safe providing quality duct to our projects and customers. We are proud of how our team has responded!!!
New 20 Foot Vicon Table
Louisiana CSI purchased and installed a new 20 foot Vicon Machinery 520-DL Plasma Table in May 2020. Since installation, this new machine has not slowed down, even in the midst of the COVID-19 pandemic. This machine has 2 cutting beds, allowing us to cut metal on one bed and liner on the other. It also can cut metal or liner on the entire 20 foot cutting area.

Using BIM to Coordinate Duct Installation
We are using Building Informational Modeling (BIM) to better coordinate duct installation with other trades. This is a snapshot from an upcoming project that is fairly complex.
Contact us today for your HVAC duct fabrication and installation needs.
Complex Duct Project
Safe and Knowledgable Shop Employees
![]() |
Kengie "Money" Gordon |
![]() |
Edward Hillard |
Kengie "Money" Gordon- shown here helping out with an order of 18" spiral duct ready for shipment. Money typically operates our rectangular duct coil line.
Ed Hillard- getting an order of 8" spiral duct prepped and ready for wrapping prior to sending to one of our customers. Ed operates our spiral duct machine.
In addition to their fabrication responsibilities, both Money and Ed work very closely with our Project Supervision and Customers to insure they receive high quality spiral and rectangular duct and related products on every shipment.
We value all of our safe, productive and loyal employees and thank them for their service to the company!!
Contact us for all of your HVAC Sheetmetal related product needs.
Spiral Duct
Louisiana CSI, LLC is a proud member of the Spiral Duct Manufacturers Association (SPIDA). SPIDA's membership is composed of companies engaged in the fabrication of round duct, spiral duct, flat oval duct, round duct fittings, and related items within the North American Continent.
Some advantages of Spiral Duct
Lower Weight- up to 25% lighter than rectangular duct!
Shorter Installation Hours- up to 30% lower than rectangular duct!
Lower Air Leakage- 2 to 10% lower air leakage!
Lower Fan Energy Use- 6 to 30% lower fan energy usage!
For more detailed information see
SPIDA's White Paper- Advantages of Spiral Duct
Contact us today for more information how spiral duct can be used in industrial, commercial and residential applications.
Buy your Duct and Related Products from Us!
![]() |
Rectangle Duct |
- Spiral Duct and Fittings
- Rectangular Duct- Galvanized- 5 foot standard length- lined or unlined- 16 – 24 gauge, TDC or standard slip and drive connections. Any size and configuration.
- Rectangular Duct Fittings- any fitting size
- Black Iron Welded Duct- all welding done by certified welders.
- Aluminum Rectangular Duct
- Stainless Steel Rectangular Duct
- Roof Curbs
- Drain Pans
- Pipe Saddles
- Plenum Boxes- Standard and Specialized
- Other custom fabricated HVAC related products
![]() |
Spiral Duct |