SFL Flues & Chimneys
Pottington Business Park
EX31 1LZ

+44 (0)1271 326633 Contact us Today


+44 (0)1271 326633
  • British Built Flue System
  • Commercial app
  • 350 diameter
  • T450 rating
  • Condensate resistant emblem
  • P1 H1 rating emblem
  • Factory fitted seals emblem
  • 10 year warrnaty


 Application Suitability

The SUPRA® offers an engineered system capable of meeting the demands for high temperature and positive pressure applications. The system is supplied complete with factory fitted and bonded elastomer seals, offering peace of mind and reduced installation time for the installer.


0.5mm 316L Stainless Steel

The entire SUPRA ® system is manufactured from corrosion-resistant grade 316L stainless steel and is manufactured using a fully welded construction together with precision formed close tolerance joints. Condensate and pressure resistance is achieved by a three lip elastomer seal located in a recess within the female end.


Installation Flexibility

The SUPRA® product is available with a wide range of support components that cater for both lateral and vertical structural loading of the product.


Custom Made Components

SFL are able to quickly turn around special components within the SUPRA® range if required to ensure you have the right components for your installation.



SUPRA XL® is manufactured using 1mm 316L stainless steel to give the additional strength 400, 500 and 600mm diameter flues demand.


10 Year Warranty

The SUPRA® range is backed up with a comprehensive 10-year product warranty. The 10 Year Warranty is a measure of our confidence in the quality and reliability of our flue systems and gives added peace of mind for any installation.

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Diameter Range

Diameter Range

SUPRA PLUS® is available 80mm to 350mm diameters adequate many systems requirements. SUPRA® is available in diameters from 400mm to 600mm ideal for large capacity installations.

Custom Made Components

Custom Made Components

SFL provide fast design and manufacture of special components for both SUPRA PLUS® and SUPRA® ranges when required, ensuring you have the correct kit for all your installations.

Jointing System

Jointing System

The joint consists of an expanded female end which incorporates a recess into which the elastomer seal is fixed and a mating male end.


Our certified quality management system and HETAS approvals ensure the high quality of our products and services to be supplied to our customers.

  • HETAS Approved
  • CEUCKA Logo
  • ISO9001 logo


SUPRA PLUS® products are manufactured exclusively in the UK at our Barnstaple headquarters in the Southwest of England. These brands boast exceptional British quality with over 50 years of industry expertise.

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Need technical design assistance?

Let's discuss your project

Our team of experienced commercial flue experts are on hand to assist you at every stage of your project. Support includes product selection and application advice including existing system surveys and advice. Working with key installation partners we can provide you with a bespoke customised turnkey package.

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