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316L Mi-FLEX Flue Liner | Durable & Versatile Flue System - National Flues

Looking for a durable and versatile flue system? Explore our 316L Mi-FLEX range, designed to meet all your fireplace installation requirements. Crafted from high-quality stainless steel, our flue liners ensure optimal safety and performance. Whether you need a 3-inch or a 12-inch liner, we have you covered. With a comprehensive selection of fixings, terminals, insulation, and accessories, you can trust in our products for a seamless installation process.

 

MI-FlexMI-Flex
Chimney FlueChimney Flue
Connecting PipesConnecting Pipes
Fans Flashings CowlsFans Flashings Cowls
Installation PartsInstallation Parts
After Care PartsAfter Care Parts
StovesStoves
FireplacesFireplaces
80MM (3 INCH)
80MM (3 INCH)
100MM (4 INCH)
100MM (4 INCH)
125MM (5 INCH)
125MM (5 INCH)
150MM (6 INCH)
150MM (6 INCH)
175MM (7 INCH)
175MM (7 INCH)
200MM (8 INCH)
200MM (8 INCH)
250MM (10 INCH)
250MM (10 INCH)
300MM (12 INCH)
300MM (12 INCH)
316L Mi-FLEX 300mm x 1m CUT LENGTH
SKU: 35Z-300-1

316L Mi-FLEX 300mm x 1m CUT LENGTH

£93.49 incl VAT

316L Mi-FLEX 80mm x 1m CUT LENGTH
SKU: 35Z-80-1

316L Mi-FLEX 80mm x 1m CUT LENGTH

£14.49 incl VAT

316L Mi-FLEX 80mm x 44m COIL
SKU: 35Z-80-44

316L Mi-FLEX 80mm x 44m COIL

£637.99 incl VAT

London Gather 9 x 12 inch - Ø 125
SKU: 61-125-LG12

London Gather 9 x 12 inch - Ø 125

£78.49 incl VAT

London Gather 9 x 19 inch - Ø 125
SKU: 61-125-LG19

London Gather 9 x 19 inch - Ø 125

£97.99 incl VAT

London Gather 9 x 6 inch - Ø 125
SKU: 61-125-LG6

London Gather 9 x 6 inch - Ø 125

£206.49 incl VAT

London Gather 9 x 9 inch - Ø 125
SKU: 61-125-LG9

London Gather 9 x 9 inch - Ø 125

£78.49 incl VAT

London Gather 9 x 12 inch - Ø 150
SKU: 61-150-LG12

London Gather 9 x 12 inch - Ø 150

£78.49 incl VAT

London Gather 9 x 19 inch - Ø 150
SKU: 61-150-LG19

London Gather 9 x 19 inch - Ø 150

£97.99 incl VAT

London Gather 9 x 26 inch - Ø 150
SKU: 61-150-LG26

London Gather 9 x 26 inch - Ø 150

£98.99 incl VAT

London Gather 9 x 6 inch - Ø 150
SKU: 61-150-LG6

London Gather 9 x 6 inch - Ø 150

£206.49 incl VAT

London Gather 9 x 9 inch - Ø 150
SKU: 61-150-LG9

London Gather 9 x 9 inch - Ø 150

£78.49 incl VAT

CHIMWRAP Liner Wrap 1000mm - Ø 175/200
SKU: 90-CW175200

CHIMWRAP Liner Wrap 1000mm - Ø 175/200

£81.49 incl VAT

Mi-Flexwrap 10m x 12mm Insulated Blanket  125mm or 150mm
SKU: 90-FW600-10

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

£227.49 incl VAT

Mi-Flexwrap 10m Kit (10m Blanket, 20 Bands, 12m Tape) 125mm or 150mm
SKU: 90-FW600-10K

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

£264.49 incl VAT

Mi-Flexwrap 10m x 12mm Insulated Blanket  180mm or 200mm
SKU: 90-FW850-10

Mi-Flexwrap 10m x 12mm Insulated Blanket 180mm or 200mm

£329.49 incl VAT

Mi-Flexwrap 10m Kit (10m Blanket, 20 Bands, 12m Tape) 180mm or 200mm
SKU: 90-FW850-10K

Mi-Flexwrap 10m Kit (10m Blanket, 20 Bands, 12m Tape) 180mm or 200mm

£377.49 incl VAT

Leca 50L Bag
SKU: 90-LECA

Leca 50L Bag

£26.99 incl VAT

Rockwool Tube - 1000mm long  125mm
SKU: 90-RPS-125

Rockwool Tube - 1000mm long 125mm

£29.99 incl VAT

Rockwool Tube - 1000mm long  150mm
SKU: 90-RPS-150

Rockwool Tube - 1000mm long 150mm

£36.99 incl VAT

Your Questions Answered

What is the difference between 316L Mi-FLEX and other flue liners? -

316L Mi-FLEX stands out due to its high-grade stainless steel construction, which enhances durability and corrosion resistance. Its flexibility and smooth inner surface make it suitable for various fireplace applications.

Can I use 316L Mi-FLEX for both wood burners and gas appliances? +

How do I know what size of 316L Mi-FLEX liner I need? +

Do I need professional help to install 316L Mi-FLEX liners? +

Is insulation necessary when using 316L Mi-FLEX liners? +

Can I use 316L Mi-FLEX liners in listed buildings? +

How long can I expect a 316L Mi-FLEX liner to last? +

At National Flues, we take pride in offering top-tier flue solutions for domestic and commercial applications. Our 316L Mi-FLEX flue liners are renowned for their durability, flexibility, and corrosion resistance, making them ideal for a wide range of projects. Whether you're a professional installer or a DIY enthusiast, our cut lengths and coils provide flexibility in fitting various flue sizes. Trust in the quality of our products to ensure a safe and efficient fireplace setup.
Why Buy These Products
The 316L Mi-FLEX flue liners are designed to cater to diverse applications, including wood burners, multi-fuel stoves, gas appliances, and more. With their high-temperature resistance and smooth inner surface, these liners promote optimal airflow and protect your chimney structure from heat and corrosion. Whether you're renovating an existing chimney or installing a new flue system, our Mi-FLEX range offers reliability and performance. Enjoy peace of mind knowing that your fireplace system is well-equipped to handle intense heat and emissions.

Trusted By Trade Professionals

Our 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. Our team is here to assist you every step of the way, ensuring your needs are met with expertise and care.