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F144 — Commercial Series

360 VRs

How to Specify

  1. Determine the system pressure (W.C.) required for the application
    • Residential series are rated at 12” positive and 3/4" negative.
    • Commercial series are rated at 16” positive and 1" negative.
    • Heavy-duty commercial flex is rated at 12” positive and 3” negative.
  2. Choose the type of flexible duct that meets the local building code requirement:
    Select the R-value required R-4.2, R-6.0 or R-8.0.

Other options

  • Insulation: insulated or uninsulated
  • Jacket type: black polyester or metalized.

How to Purchase

Flex Duct FAQs

F144 — Commercial Series


Submittal Data (151 KB, PDF)
  • Black polyethylene jacket
  • Corrugated aluminum core 12" W.C. positive, 3" W.C. negative
  • R-4.2
  • UL-listed
  • Available in 6' and 7-1/2' lengths
  • GREENGUARD Level 4 highly microbial resistant

Commercial Series sizes (inches)

ModelLength (feet)4567891012141618202224
FB1147 12**•*•*

* Not UL-listed
** For California Only