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Twin wall: 135 degree T with ADJUSTABLE 730-1040 prolonged snout (requires soot collection door)

Colour & Internal Diameter
Silver 5"
Silver 6"
Black 5"
Black 6"
Materials always in stock (4 UK-wide depots). This is a twin wall clip-together chimney part used to build a new chimney. Twin wall clip-together chimney can be as close as 5-7cm to combustible materials (so is also useful for adding atop a stove to bypass a wooden beam).

The snout is fully adjustable between 73cm and 104cm.

Soot collection door required for the bottom of the vertical section.

Extra insulation supplied (when you extend the snout there will be a void of insulation in the snout).



But why not just mix a standard silver 135 degrees T (non-adjustable) with a standard length of twin wall? You can but you end up with a locking band half in the property and half out of the property. This locking band is always in the way, especially if fitting a finishing plate.

Stove Fitter's Warehouse offers a full Twin Wall Design Service with all designs prepared within our Twin Wall Design Studio. Contact us for further details (

Duraflue Twin Wall was launched to the market during 2014 and, due to its high quality and innovative design, is already a favourite amongst professional stove fitters.


Top tip: No fire cement or glue of any kind is used when connecting twin wall pipe to twin wall pipe - it is just push-fit (with a locking band for added security). When to use fire cement on flue joints? Use the SEARCH function and type "sealing flue joints".

Customer Reviews

Based on 147 reviews
Stove installation

Converted a garage barn into luxury accommodation for a client & used the web site & really helpful advice from the guys to plan & then buy & install the stove pipe up through the room & through the roof.
Website really informative, guys really helpful. Won’t look anywhere else I for future products. Il just use Stovefitters

Duraflue 135 degree tee 6" black Order 10746

The tee was delivered as part of a complete flue on time and well packaged. It was simple to install and looks very smart powder coated black against our white walled Welsh cottage. The product is not the cheapest on the market but quality is excellent and I have no doubts on durability although only time will tell., One small improvement that could be helpful to DIY installers like mysellf is to make the Duraflue spec and installation guide available on your website, it contains very useful info for design,instalation and Building Control approval