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Gas FLEX - High-Quality Flue Liners & Accessories | National Flues

Gas FLEX offers a range of flexible flue liner and installation accessories designed for gas appliances. At National Flues, we provide a comprehensive selection of flue liners in sizes ranging from 80mm to 300mm. These products are suitable for gas and oil applications, ensuring your fireplace operates efficiently and safely. Gas FLEX products are known for their durability and ease of installation, making them a top choice for both homeowners and professionals in the industry.

 

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)
Nose Cone - Ø 100
SKU: 20-100-NC

Nose Cone - Ø 100

£5.99 incl VAT

Nose Cone - Ø 125
SKU: 20-125-NC

Nose Cone - Ø 125

£5.49 incl VAT

Nose Cone - Ø 150
SKU: 20-150-NC

Nose Cone - Ø 150

£5.99 incl VAT

Nose Cone - Ø 180
SKU: 20-180-NC

Nose Cone - Ø 180

£7.49 incl VAT

Nose Cone - Ø 200
SKU: 20-200-NC

Nose Cone - Ø 200

£7.99 incl VAT

Top Clamp - Ø 250
SKU: 20-250-C

Top Clamp - Ø 250

£11.99 incl VAT

Nose Cone - Ø 250
SKU: 20-250-NC

Nose Cone - Ø 250

£148.49 incl VAT

Top Plate - Ø 250
SKU: 20-250-P

Top Plate - Ø 250

£11.99 incl VAT

Top Clamp - Ø 300
SKU: 20-300-C

Top Clamp - Ø 300

£14.99 incl VAT

Nose Cone - Ø 300
SKU: 20-300-NC

Nose Cone - Ø 300

£102.99 incl VAT

Top Plate - Ø 300
SKU: 20-300-P

Top Plate - Ø 300

£14.99 incl VAT

Top Clamp - Ø 80
SKU: 20-80-C

Top Clamp - Ø 80

£8.99 incl VAT

Top Plate - Ø 80
SKU: 20-80-P

Top Plate - Ø 80

£10.99 incl VAT

Triplelock - Flue Adaptor - Ø 100
SKU: 34-100-A

Triplelock - Flue Adaptor - Ø 100

£15.49 incl VAT

Triplelock - Adaptor, Screw-Fix - Ø 100
SKU: 34-100-ASF

Triplelock - Adaptor, Screw-Fix - Ø 100

£15.49 incl VAT

Triplelock - GC1 Gas Terminal - Ø 100
SKU: 34-100-C

Triplelock - GC1 Gas Terminal - Ø 100

£7.99 incl VAT

Triplelock - Oil Cowl, Chinamans Hat - Ø 100
SKU: 34-100-O

Triplelock - Oil Cowl, Chinamans Hat - Ø 100

£17.49 incl VAT

Triplelock - Clamp Plate (2 pc.) - Ø 100
SKU: 34-100-P

Triplelock - Clamp Plate (2 pc.) - Ø 100

£4.49 incl VAT

Triplelock - Installer Pack B (Clamp, GC1) - Ø 100
SKU: 34-100-PB

Triplelock - Installer Pack B (Clamp, GC1) - Ø 100

£10.99 incl VAT

Triplelock - Installer Pack C (Clamp, GC1, Nose Cone) - Ø 100
SKU: 34-100-PC

Triplelock - Installer Pack C (Clamp, GC1, Nose Cone) - Ø 100

£16.49 incl VAT

Your Questions Answered

What sizes are available for Gas FLEX flue liners? -

Gas FLEX flue liners come in sizes ranging from 80mm (3 inch) to 300mm (12 inch), catering to a wide range of gas appliance installations.

Are Gas FLEX flue liners suitable for gas and oil applications? +

How do Gas FLEX flue liners enhance safety? +

Can homeowners install Gas FLEX flue liners themselves? +

Do Gas FLEX flue liners require regular maintenance? +

Are Gas FLEX flue liners compatible with all gas appliances? +

Can Gas FLEX flue liners improve the efficiency of a fireplace? +

Gas FLEX flue liners are crafted using high-grade materials to meet stringent safety standards. Our range includes liners in various diameters and lengths to suit different installation needs. Whether you're fitting a new fireplace or upgrading an existing system, Gas FLEX products offer a reliable solution. Each flue liner is engineered for optimal performance and longevity, providing a smooth passage for gases to vent out effectively. At National Flues, we not only offer top-quality products but also expert advice to help you select the right components for your project.
Why Buy These Products
Gas FLEX flue liners are essential components for venting gases from gas appliances safely. These liners create a secure passage for combustion byproducts to exit your home, reducing the risk of harmful emissions inside. By using Gas FLEX products, you can ensure proper ventilation for your fireplace or stove, enhancing both efficiency and safety. The flexible design of the liners allows for easier installation, making them ideal for various applications. Whether you're a homeowner or a professional installer, Gas FLEX flue liners provide a durable and reliable solution for your heating system.

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.