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

175MM (7 INCH) Flues & Fireplaces | Quality Flue Liners & Accessories

Discover top-notch 175mm (7 inch) flue liners and accessories for your gas or oil fireplace needs. Our range includes MI-Flex and Gas FLEX products designed to ensure efficient and safe flue systems. Whether you require fixings, terminals, or register plates, our selection has you covered. Trust in our durable 316L Grade Flue Liners suitable for both gas and oil systems. Ensure a reliable and secure flue with our Triplelock 180mm Dia x 32m Z Pack liner. Upgrade your fireplace setup with our premium 175mm (7 inch) offerings.
Discover top-notch 175mm (7 inch) flue liners and accessories for your gas or oil fireplace needs. Our range includes MI-Flex and Gas FLEX products designed to ensure efficient and safe flue systems. Whether you require fixings, terminals, or register plates, our selection has you covered. Trust in our durable 316L Grade Flue Liners suitable for both gas and oil systems. Ensure a reliable and secure flue with our Triplelock 180mm Dia x 32m Z Pack liner. Upgrade your fireplace setup with our premium 175mm (7 inch) offerings.


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.

£9.99 £843.99
Showing 9 of 9 items
175mm (7 inch) Flue Liner 316L for Gas and Oil  (316L Grade)

175mm (7 inch) Flue Liner 316L for Gas and Oil (316L Grade)

4Z-180-1
£19.99 (including VAT)
In stock
Triplelock 180mm Dia x 32m Z PACK (Liner ONLY)

Triplelock 180mm Dia x 32m Z PACK (Liner ONLY)

4Z-180-32
from £843.99 (including VAT)
In stock
Triplelock - Flue Adaptor - Ø 175

Triplelock - Flue Adaptor - Ø 175

34-180-A
£23.99 (including VAT)
In stock
Triplelock - Short Gas Terminal - Ø 175

Triplelock - Short Gas Terminal - Ø 175

34-180-C
£68.99 (including VAT)
In stock
Triplelock - Clamp Plate - Ø 175

Triplelock - Clamp Plate - Ø 175

34-180-P
£24.99 (including VAT)
In stock
Debris Collar with Nut and Bolt - Ø 175

Debris Collar with Nut and Bolt - Ø 175

94-COLLAR-175
£24.99 (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
Nose Cone - Ø 180

Nose Cone - Ø 180

20-180-NC
£9.99 (including VAT)
Out of stock
7 inch: Fireflexmaster: Suspension cowl for gas : Stainless

7 inch: Fireflexmaster: Suspension cowl for gas : Stainless

997-175-SCG
£40.99 (including VAT)
Out of stock
Your 175MM (7 INCH) Questions Answered

What is the importance of a flue liner in a fireplace? -

A flue liner protects the chimney structure from heat and corrosion, improves draft efficiency, and ensures the safe passage of combustion by-products out of the home.

Are 175mm (7 inch) flue liners suitable for both gas and oil systems? +

How do I know which fixings and terminals are suitable for my flue setup? +

What benefits does the Triplelock 180mm Dia x 32m Z Pack liner offer? +

Can I use the products in this category for both residential and commercial applications? +

Do I need a register plate for my fireplace installation? +

Are MI-Flex and Gas FLEX products known for their quality and reliability? +

When it comes to enhancing your fireplace or stove system, having the right flue components is crucial for optimum performance. Our 175mm (7 inch) category provides a comprehensive selection of flue liners, fixings, terminals, and register plates that are essential for a safe and efficient flue system. Our MI-Flex and Gas FLEX products are built to withstand the demands of gas and oil systems, ensuring durability and longevity. The 316L Grade Flue Liners we offer are ideal for maintaining high standards in your flue setup, providing reliability and peace of mind. Additionally, the Triplelock 180mm Dia x 32m Z Pack liner is a top-of-the-line solution for those seeking premium quality and performance from their flue liners.
Why Buy 175MM (7 INCH) Products
The 175mm (7 inch) flue liners and accessories in this category are designed to cater to a variety of fireplace and stove setups. Whether you are installing a new flue system or upgrading an existing one, these products offer versatility and compatibility with gas and oil setups. The fixings and terminals available ensure secure connections and proper ventilation for efficient operation. Register plates play a vital role in sealing off the chimney to prevent heat loss and maintain safety standards. With our quality 175mm (7 inch) products, you can create a reliable and robust flue system tailored to your specific needs.

Trusted By Trade Professionals

Our 175MM (7 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 175MM (7 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