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F214/FB214/F216/FB216/F218/FB218

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

F214/FB214/F216/FB216/F218/FB218

  • Metalized polyester jacket reinforced with fiberglass scrim
  • Double-ply, black polyester core 12" W.C. positive, 3/4" W.C. negative (1/2" W.C. neg for 14" - 20" diameter)
  • R-4.2 F214,FB214 / R-6.0 F216,FB216 / R-8.0 F218,FB218
  • UL-listed
  • Boxed or bagged (FB series)
  • 25' and 50' lengths
  • GREENGUARD Level 4 highly microbial resistant

Available Sizes

ModelLength (feet)3456789101214161820
F21425
FB21425
F21450
F21625
FB21625
F21650
F21825
FB21825