Express Duct Flange Adapters

Express Duct flange adapters are designed to connect Express Duct clipped ducting to a flanged connection point. Express Duct flange adapters can also be used to connect to a flat surface via the flat bar flange end. You’ll often see them referred to as a duct flange, ducting flange, or ductwork flange, which is essentially a practical way to create a secure flange-style interface while keeping the speed and simplicity of the express duct system.

This category includes Express Duct flange adapters in sizes from 80mm to 500mm, including popular options such as 100mm and 150mm duct flanges.

Important: This information is general. If you’re unsure which duct flange adapter you need for your setup, speak to our team before ordering.

Duct flange adapters for Express Duct clipped ducting

Each flange adapter combines two ends:

A flat bar flange on one side, and
An express duct connection on the other (for clipped ducting runs)

They’re a simple way to add a duct connector flange into an Express Duct line without changing the rest of the ductwork system.

Sizes and technical details (80mm to 500mm duct flanges)

These flange adapters are available across a wide diameter range so you can match the size of your existing duct run. Most customers choose their duct flange by diameter first (for example 100mm or 150mm), then confirm any connection details before ordering.

Technical specifications (at a glance)

Diameter range: 80mm–500mm
Flange type: 5mm thick electroplated flat bar flange
System connection: Express Duct clipped ducting end
Note: Quick clips are sold separately

Compatibility and related connectors

Express Duct flange adapters are part of the Express Duct clipped system, but if you’re connecting Express Duct to another duct type (for example a different ductwork standard or an existing line), we can also supply suitable adapters and connection components.

If you’re trying to match to older ductwork or a mixed system, it’s worth checking with the team so you order the right parts first time.

FAQ

What is the purpose of a duct flange adapter?

It provides a flange-style connection point while allowing you to keep using Express Duct lipped ducting on the other end.

What sizes are available for Express Duct flanges?

This category includes sizes from 80mm to 500mm, including common sizes like 100mm and 150mm.

Is a gasket required for a ducting flange connection?

That depends on the connection you’re making and how the mating flange is set up. If you’re unsure, tell us what you’re connecting to and we’ll point you in the right direction.

Can I use these duct flanges with spiral ducting?

These flange adapters are designed for Express Duct clipped ducting. If you need to connect to spiral ducting, we can help you choose the correct adapter/connector for the job.