Sizes selected are inside diameter in millimetres.
Nordfab ducting has a rolled edge that connects with Quick Release Clips (sold separately).
For more dimensions and product information, click the Downloads and Data Sheets tab. To read more about the Quick-Fit duct system, you can view the catalogue by clicking here.
Please note that product shown in the image is for illustration purposes only. The actual product supplied may differ in appearance, build or manufacturer.