Nordfab Ducting End Types

Nordfab offers a variety of end types or connector styles to help you fit our Quick-Fit® duct components together or when you need to add into existing ductwork or connect to machinery.

Nordfab Quick-Fit® rolled end on ductQUICK-FIT: Standard on all Quick-Fit products, the QF® rolled edge end works with our Quick-Fit clamp to make ductwork installation fast and easy. This is the end type provided as standard on most Nordfab products so, generally, there is no need to specify. However, on an order for a custom component with more than one end type, if you need to specify a QF rolled end, please indicate “QF”.


Nordfab duct with industry-standard flangeFLANGED: Flanged ends allow you to adapt our QF ducting to existing flanged duct or machinery with flanged connections. We can provide industry standard Angle Flanges or, if you require a custom hole pattern, a Flat Flange. On orders, please indicate “AFL” for angle flange ends or “FFL” for flat flanges (and be sure to provide hole pattern information). Flanged ends are standard on ductwork larger than 24 inches and does not require end specification.


Nordfab Quick-Fit duct hose adapter end typeHOSE: If you are adding flexible hose into your ductwork, our RAWFLEX end has a bead around the duct component near the edge to help secure clamps placed around the hose. Order a Hose Adapter.


Nordfab Quick-Fit duct showing NOFIT end typeNOFIT: For components with no customization on the end, we can provide “No Fit” (no fitting). When ordering, indicate “NOFIT” (NF).


Nordfab duct end types

illustration of duct end types / connector styles

Nordfab Flanged Adapters and Ducting

Adapting Quick-Fit® Ducting to Existing Flanged Ductwork

Nordfab’s Quick-Fit (QF) ducting components can easily be connected into existing flanged duct systems using adapters such as our Angle Flange Adapter. The Angle Flange Adapter has a QF rolled edge on one end and a Nordfab Products, which is an industry standard angle ring, on the other end.

Nordfab flanges

Nordfab can also provide Flat Flange ends, which can be customized to your hole pattern requirements.



Quick-Fit ducting is available in diameters up to 24″. For larger duct requirements, Nordfab manufactures flanged duct pipe in diameters up to 40″ in standard gauges and up to 72” in heavier gauges. Flanged duct pipe is constructed from sheet blanks 59″ long, rolled with a longitudinal lock-form seam. An industry standard angle flange, made from angle bar stock rolled on edge, is placed on the end of the duct and secured via a Van Stone lip connection. The loose flange allows easy match up to holes on existing flanges. Connection of two flanged pipes is illustrated below.

flanged duct connections

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