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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.

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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.

£14.49

35Z-80-1

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

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

£637.99

35Z-80-44

316L Mi-FLEX 80mm x 44m COIL

316L Mi-FLEX 80mm x 44m COIL

£16.99

35Z-100-1

316L Mi-FLEX 100mm x 1m CUT LENGTH

316L Mi-FLEX 100mm x 1m CUT LENGTH

£735.49

35Z-100-44

316L Mi-FLEX 100mm x 44m COIL

316L Mi-FLEX 100mm x 44m COIL

£14.49

35Z-125-1

316L Mi-FLEX 125mm x 1m CUT LENGTH

316L Mi-FLEX 125mm x 1m CUT LENGTH

£622.49

35Z-125-44

316L Mi-FLEX 125mm x 44m COIL

316L Mi-FLEX 125mm x 44m COIL

£16.49

35Z-150-1

316L Mi-FLEX 155mm x 1m CUT LENGTH

316L Mi-FLEX 155mm x 1m CUT LENGTH

£650.49

35Z-150-40

316L Mi-FLEX 155mm x 40m COIL

316L Mi-FLEX 155mm x 40m COIL

£28.49

35Z-180-1

316L Mi-FLEX 180mm x 1m CUT LENGTH

316L Mi-FLEX 180mm x 1m CUT LENGTH

£901.49

35Z-180-32

316L Mi-FLEX 180mm x 32m COIL

316L Mi-FLEX 180mm x 32m COIL

OUT OF STOCK

£31.49

35Z-200-1

316L Mi-FLEX 200mm x 1m CUT LENGTH

316L Mi-FLEX 200mm x 1m CUT LENGTH

£937.99

35Z-200-30

316L Mi-FLEX 200mm x 30m COIL

316L Mi-FLEX 200mm x 30m COIL

£66.99

35Z-250-1

316L Mi-FLEX 250mm x 1m CUT LENGTH

316L Mi-FLEX 250mm x 1m CUT LENGTH

£93.49

35Z-300-1

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

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

£19.99

20-80-MR

Increasing MI-FLEX Adaptor - Ø 80-Ø 100

Increasing MI-FLEX Adaptor - Ø 80-Ø 100

OUT OF STOCK

£21.99

25-80-MAELT

Screw-FIX Long Tail Adaptor - Ø 80

Screw-FIX Long Tail Adaptor - Ø 80

£22.99

25-80-MR

Screw-FIX Increaser - Ø 80-100mm

Screw-FIX Increaser - Ø 80-100mm

£32.49

25-80-THA

Screw-FIX Top Hat Adaptor - Ø 80

Screw-FIX Top Hat Adaptor - Ø 80

Your 316L Mi-FLEX 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 316L Mi-FLEX 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 316L Mi-FLEX 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 316L Mi-FLEX 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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