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DTW 90 degree tee (requires soot collection door)

Colour & Internal Diameter
Silver 5"
Silver 6"
Black 5"
Black 6"

Doing it yourself? Visit our "How to install twin wall flue" page.

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).


Stove Fitter's Warehouse offers a full Twin Wall Design Service with all designs prepared within our Twin Wall Design Studio:

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. Brackets are strong whereas other brands may be spindly and quality is premium. Do it once - do it good.

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 209 reviews
Brian Gerrard
Twin Wall Flu Order Number 15652

A family friend pointed in the direction of Stovefitters Warehouse as he had heard good things about them, best move I have made. From my initial tentative contact with the company I cannot speak highly enough about them. I sent in my very primitive sketches I had drawn up and was asked some very simply questions and for some measurements that where required. In no time at all I was sent my first set of drawings for me to scrutinise, noticed that the initial design was excellent there was a need for a couple of changes. Once these changes had been made I was sent the final set of drawings all of this was being completed via email and I confirmed these where exactly what I was after. The above process had only taken a couple of days and was seamless. I placed my order and received this I believe within 5 days of payment, all the items where well packed and after a quick check I confirmed all the chimney was in good order. I cannot fault the service I have received from start to finish and would highly recommend dealing with Stovefitter Warehouse TOP JOB.

Simon Flower
External twin-wall flue design and supply

Good service from stovefitters (as previously - I'm a repeat customer). I haven't used the chimney design service before and it's a great service - from the amount of material on the web site to help, through the individual design and drawing to the supply of parts. People at the company are responsive to questions and authoritative. All went smoothly, though I've yet to complete the installation. In previous experiences the installation went as smoothly as the ordering (and the parts are still working well 7 years later).

Order number 15048