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MI-Flex 316L Mi-FLEX 150MM (6 INCH) Flue Liner - Buy Now & Stay Cozy

Looking to enhance your fireplace performance? The MI-Flex 316L Mi-FLEX 150MM (6 INCH) flue liner is the perfect solution. This durable, easy-to-install liner provides excellent ventilation, ensuring your fireplace operates at its best. With top-grade materials and precise engineering, this flue liner is designed to last and keep your home safe. Explore our range of accessories and install kits to complete your fireplace setup effortlessly.
Looking to enhance your fireplace performance? The MI-Flex 316L Mi-FLEX 150MM (6 INCH) flue liner is the perfect solution. This durable, easy-to-install liner provides excellent ventilation, ensuring your fireplace operates at its best. With top-grade materials and precise engineering, this flue liner is designed to last and keep your home safe. Explore our range of accessories and install kits to complete your fireplace setup effortlessly.


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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 £878.99
Showing 20 of 86 items
MI-FLEX FastFix-Screw Hanging Cowl (Terracotta) - Ø150

MI-FLEX FastFix-Screw Hanging Cowl (Terracotta) - Ø150

21-150-PHCMT
£55.99 (including VAT)
In stock
Screw-FIX Increaser - Ø 125-150mm

Screw-FIX Increaser - Ø 125-150mm

25-125-MR
£25.99 (including VAT)
In stock
Screw-FIX Long Tail Increaser - Ø 125-150mm

Screw-FIX Long Tail Increaser - Ø 125-150mm

25-125-MRLT
£43.99 (including VAT)
In stock
Screw-FIX Joiner - Ø 150

Screw-FIX Joiner - Ø 150

25-150-J
£46.99 (including VAT)
In stock
Screw-FIX Adaptor to SW - Ø 150

Screw-FIX Adaptor to SW - Ø 150

25-150-MAE
£17.99 (including VAT)
In stock
Screw-FIX Adaptor to SW, 1mm - Ø 150

Screw-FIX Adaptor to SW, 1mm - Ø 150

25-150-MAE1
£35.99 (including VAT)
In stock
Screw-FIX Long Tail Adaptor - Ø 150

Screw-FIX Long Tail Adaptor - Ø 150

25-150-MAELT
£31.99 (including VAT)
In stock
Screw-FIX Nose Cone - Ø 150

Screw-FIX Nose Cone - Ø 150

25-150-NC
£17.99 (including VAT)
In stock
MI-FLEX Screw-FIX Pot Hanging Cowl, Terracotta - Ø 150

MI-FLEX Screw-FIX Pot Hanging Cowl, Terracotta - Ø 150

25-150-PHCMT2
£59.99 (including VAT)
In stock
Screw-FIX Pot Hanger - Ø 150

Screw-FIX Pot Hanger - Ø 150

25-150-PHS
£28.99 (including VAT)
In stock
Screw-FIX Rain Cap - Ø 150

Screw-FIX Rain Cap - Ø 150

25-150-RC
£30.99 (including VAT)
In stock
Screw-FIX Register Plate Adaptor - Ø 150

Screw-FIX Register Plate Adaptor - Ø 150

25-150-RPA
£45.99 (including VAT)
In stock
London Gather 9 x 12 inch - Ø 150

London Gather 9 x 12 inch - Ø 150

61-150-LG12
£92.99 (including VAT)
In stock
London Gather 9 x 19 inch - Ø 150

London Gather 9 x 19 inch - Ø 150

61-150-LG19
£107.99 (including VAT)
In stock
London Gather 9 x 26 inch - Ø 150

London Gather 9 x 26 inch - Ø 150

61-150-LG26
£112.99 (including VAT)
In stock
London Gather 9 x 6 inch - Ø 150

London Gather 9 x 6 inch - Ø 150

61-150-LG6
£80.99 (including VAT)
In stock
London Gather 9 x 9 inch - Ø 150

London Gather 9 x 9 inch - Ø 150

61-150-LG9
£89.99 (including VAT)
In stock
Mi-Flexwrap 10m x 12mm Insulated Blanket  125mm or 150mm

Mi-Flexwrap 10m x 12mm Insulated Blanket 125mm or 150mm

90-FW600-10
£235.99 (including VAT)
In stock
Mi-Flexwrap 10m Kit (10m Blanket, 20 Bands, 12m Tape) 125mm or 150mm

Mi-Flexwrap 10m Kit (10m Blanket, 20 Bands, 12m Tape) 125mm or 150mm

90-FW600-10K
£274.99 (including VAT)
In stock
Leca 50L Bag

Leca 50L Bag

90-LECA
£27.99 (including VAT)
In stock
Your 150MM (6 INCH) Questions Answered

Is the MI-Flex 316L Mi-FLEX 150MM (6 INCH) flue liner suitable for all types of fuel? -

Yes, this flue liner is compatible with a wide range of fuels, including wood, coal, gas, and oil. It is designed to handle high temperatures and various combustion byproducts efficiently.

How long does the MI-Flex 150MM (6 INCH) flue liner last? +

Can I install the flue liner myself? +

Do I need any special tools to install the MI-Flex 150MM (6 INCH) flue liner? +

Is insulation necessary when installing the flue liner? +

How do I know what length of flue liner I need for my fireplace? +

Are there any regulations I need to consider when installing a flue liner? +

Can the MI-Flex 150MM (6 INCH) flue liner be used in a multi-fuel stove? +

The MI-Flex 316L Mi-FLEX 150MM (6 INCH) flue liner is a top choice for homeowners seeking quality and performance. Made from premium 316L stainless steel, this flue liner offers durability and corrosion resistance, ensuring years of reliable service. Easy to cut and install, it's suitable for various fireplace setups, providing a seamless connection for optimal ventilation. With the MI-Flex 150MM (6 INCH) flue liner, you can enjoy a safer and more efficient fireplace experience.
Why Buy 150MM (6 INCH) Products
The MI-Flex 316L Mi-FLEX 150MM (6 INCH) flue liner is ideal for both new fireplace installations and upgrades. By using this flue liner, you can improve the draft efficiency of your chimney, reduce the risk of creosote buildup, and enhance overall safety. Whether you have a traditional open fireplace or a wood-burning stove, the MI-Flex 150MM (6 INCH) flue liner can help you achieve optimal performance and peace of mind.

Trusted By Trade Professionals

Our 150MM (6 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 150MM (6 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.

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