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.