Selecting the right duct material is critical for chemical and wastewater applications where corrosive fumes, moisture, and harsh operating conditions can shorten system life. This guide compares galvanized steel, stainless steel, and flanged ductwork, helping engineers, contractors, and plant managers choose the best solution for long-term performance, reliability, and corrosion resistance.
Single and Double Branches
Single and Double Branches taper as the new line enters the mainline. This is because the new line is bringing in more air. The exit part of the branch (toward the fan) is bigger to accommodate the increase in air. The new line typically enters at 30 or 45 degrees so as to 'merge' into the airflow.
- All branches are 18 gauge or heavier
- Standard at 45°. Available in other degrees.
Related Resources
Product Reviews
As you can see, our customers love us.
inquire about a CUSTOM order
Need an unlisted product? We got you! Fill out this form and a Duct rep will get back to you within 1-2 business days.
Talk to a Duct Guy or Gal
Get started on a solution tailored to your needs, or explore our range of inline separators, self-dumping hoppers, and baghouses for even more ways to optimize your workspace.




.avif)





