Free Delivery over £100+ 5on Trustpilot Browse our popular stoves Fast Mainland UK Delivery Buy stoves with install packs Call 01670 206 999 for help

Premium 80mm (3 Inch) Flue Liners - Buy Online at National Flues

Discover the excellent range of 80mm (3 inch) flue liners at National Flues. Our MI-Flex and 904L Mi-FLEX products are designed for durability and optimal performance. Whether you need flue liners, bottom fixings, terminals, top fixings, or accessories, we have you covered. Benefit from our reliable 80mm (3 inch) flue solutions to enhance your fireplace system.
Discover the excellent range of 80mm (3 inch) flue liners at National Flues. Our MI-Flex and 904L Mi-FLEX products are designed for durability and optimal performance. Whether you need flue liners, bottom fixings, terminals, top fixings, or accessories, we have you covered. Benefit from our reliable 80mm (3 inch) flue solutions to enhance your fireplace system.


Shop By Department

StovesPremium Stoves
FireplacesStunning Fireplaces
MI-FlexFlexible Liner
Chimney FlueChimney Flue
Connecting PipesConnecting Pipes
Fans Flashings CowlsFans Flashings Cowls
Installation PartsInstallation Parts
After Care PartsAfter Care Parts

The best selling flue liner in the UK. Suitable for gas, oil, and approved solid fuels. Call our advisers on 01670 206 999 if you need any help choosing.

£1.93 £1,918.99
Showing 19 of 19 items
904L Mi-FLEX 80mm x 1m CUT LENGTH

904L Mi-FLEX 80mm x 1m CUT LENGTH

36Z-80-1
£33.99 (including VAT)
In stock
904L Mi-FLEX 80mm x 44m COIL

904L Mi-FLEX 80mm x 44m COIL

36Z-80-44
from £1,918.99 (including VAT)
In stock
Jubilee Clip and Banding Ø 200 - 800mm length

Jubilee Clip and Banding Ø 200 - 800mm length

13-JUBILEE-200
£3.99 (including VAT)
In stock
Jubilee Clip and Banding Ø 300 - 1000mm length

Jubilee Clip and Banding Ø 300 - 1000mm length

13-JUBILEE-300
£4.99 (including VAT)
In stock
Top Clamp - Ø 80

Top Clamp - Ø 80

20-80-C
£8.99 (including VAT)
In stock
Increasing MI-FLEX Adaptor - Ø 80-Ø 100

Increasing MI-FLEX Adaptor - Ø 80-Ø 100

20-80-MR
£20.99 (including VAT)
In stock
Top Plate - Ø 80

Top Plate - Ø 80

20-80-P
£11.99 (including VAT)
In stock
Chimney Notice Plate

Chimney Notice Plate

20-CNP
£1.93 (including VAT)
In stock
Chimney Notice Plate - 50 Pack

Chimney Notice Plate - 50 Pack

20-CNP48
£90.99 (including VAT)
In stock
Screw-FIX Flex Joiner - Ø 80

Screw-FIX Flex Joiner - Ø 80

25-80-J
£30.99 (including VAT)
In stock
Screw-FIX Long Tail Adaptor - Ø 80

Screw-FIX Long Tail Adaptor - Ø 80

25-80-MAELT
£22.99 (including VAT)
In stock
Screw-FIX Increaser - Ø 80-100mm

Screw-FIX Increaser - Ø 80-100mm

25-80-MR
£23.99 (including VAT)
In stock
Screw-FIX Nose Cone - Ø 80

Screw-FIX Nose Cone - Ø 80

25-80-NC
£14.99 (including VAT)
In stock
Screw-FIX Pot Hanging Cowl, Natural - Ø 80

Screw-FIX Pot Hanging Cowl, Natural - Ø 80

25-80-PHCM
£37.99 (including VAT)
In stock
Screw-FIX Pot Hanging Cowl, Terracotta - Ø 80

Screw-FIX Pot Hanging Cowl, Terracotta - Ø 80

25-80-PHCMT
£47.99 (including VAT)
In stock
Screw-FIX Pot Hanger - Ø 80

Screw-FIX Pot Hanger - Ø 80

25-80-PHS
£22.29 (including VAT)
In stock
Screw-FIX Rain Cap - Ø 80

Screw-FIX Rain Cap - Ø 80

25-80-RC
£21.99 (including VAT)
In stock
Screw-FIX Top Hat Adaptor - Ø 80

Screw-FIX Top Hat Adaptor - Ø 80

25-80-THA
£32.99 (including VAT)
In stock
Register Plate (H) - 900x600, no access holes

Register Plate (H) - 900x600, no access holes

94-REG-H
£51.99 (including VAT)
In stock
Your 80MM (3 INCH) Questions Answered

Are 80mm (3 inch) flue liners suitable for all types of fireplaces? -

Yes, our 80mm flue liners are designed to cater to a wide range of fireplace installations, ensuring compatibility and efficiency.

Do you provide installation services for 80mm (3 inch) flue liners? +

Are the MI-Flex and 904L Mi-FLEX flue liners durable? +

Can I purchase custom lengths of 80mm (3 inch) flue liners? +

Do your 80mm (3 inch) flue liners come with a warranty? +

Are the bottom fixings and terminals included with the 80mm (3 inch) flue liners? +

Do you provide technical support for choosing the right 80mm (3 inch) flue liners? +

How do I maintain and clean my 80mm (3 inch) flue liners? +

When it comes to fireplace installations, using the right flue liners is crucial for safety and efficiency. At National Flues, our 80mm (3 inch) flue liners are crafted with precision and high-grade materials. The MI-Flex and 904L Mi-FLEX options in this category are known for their longevity and resilience. By choosing our 80mm (3 inch) flue liners, you're investing in top-quality products that meet industry standards and exceed expectations. Browse our selection today to find the perfect fit for your fireplace project.
Why Buy 80MM (3 INCH) Products
Our 80mm (3 inch) flue liners are versatile and suitable for various applications. Whether you're installing a new fireplace, upgrading an existing system, or need replacements, our products are ideal. The flexibility and reliability of the MI-Flex and 904L Mi-FLEX flue liners make them a preferred choice among homeowners and professionals alike. From residential properties to commercial buildings, our 80mm (3 inch) flue liners deliver outstanding performance. Trust National Flues for all your flue liner needs.

Trusted By Trade Professionals

Our 80MM (3 INCH) products and services are trusted by hundreds of professionals nationwide. We're committed to providing quality and reliability that meets the high standards of our customers.

Dedicated Support

Experience our unparalleled customer service and support when you buy 80MM (3 INCH) from National Flues. Our team is here to assist you every step of the way, ensuring your needs are met with expertise and care.

Call the Experts   8am-5pm