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Top-Quality 100mm (4 Inch) Flue Accessories | Buy Now

Upgrade your fireplace with top-quality 100mm (4 inch) flue accessories designed to enhance performance and durability. Our MI-Flex ScrewFIX Fixings offer a seamless fit and superior functionality. Whether you need a rain cap, pot hanging cowl, or register plate adaptor, we have you covered. Discover a range of accessories, terminals, bottom fixings, and more to complete your fireplace setup with style and efficiency.
Upgrade your fireplace with top-quality 100mm (4 inch) flue accessories designed to enhance performance and durability. Our MI-Flex ScrewFIX Fixings offer a seamless fit and superior functionality. Whether you need a rain cap, pot hanging cowl, or register plate adaptor, we have you covered. Discover a range of accessories, terminals, bottom fixings, and more to complete your fireplace setup with style and efficiency.


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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.

£5.99 £54.99
Showing 13 of 13 items
Nose Cone - Ø 100

Nose Cone - Ø 100

20-100-NC
£5.99 (including VAT)
In stock
Rain Cap - Ø 100

Rain Cap - Ø 100

20-100-RC
£20.99 (including VAT)
In stock
Screw-FIX Flex Joiner - Ø 100

Screw-FIX Flex Joiner - Ø 100

25-100-J
£34.99 (including VAT)
In stock
Screw-FIX Adaptor to SW - Ø 100

Screw-FIX Adaptor to SW - Ø 100

25-100-MAE
£13.99 (including VAT)
In stock
Screw-FIX Long Tail Adaptor - Ø 100

Screw-FIX Long Tail Adaptor - Ø 100

25-100-MAELT
£25.99 (including VAT)
In stock
Screw-FIX Increaser - Ø 100-125mm

Screw-FIX Increaser - Ø 100-125mm

25-100-MR
£24.99 (including VAT)
In stock
Screw-FIX Long Tail Increaser - Ø 100-125mm

Screw-FIX Long Tail Increaser - Ø 100-125mm

25-100-MRLT
£39.99 (including VAT)
In stock
Screw-FIX Nose Cone - Ø 100

Screw-FIX Nose Cone - Ø 100

25-100-NC
£15.99 (including VAT)
In stock
Screw-FIX Pot Hanging Cowl, Natural - Ø 100

Screw-FIX Pot Hanging Cowl, Natural - Ø 100

25-100-PHCM
£43.99 (including VAT)
In stock
Screw-FIX Rain Cap - Ø 100

Screw-FIX Rain Cap - Ø 100

25-100-RC
£24.99 (including VAT)
In stock
Screw-FIX Register Plate Adaptor - Ø 100

Screw-FIX Register Plate Adaptor - Ø 100

25-100-RPA
£34.99 (including VAT)
In stock
Screw-FIX Pot Hanging Cowl, Terracotta - Ø 100

Screw-FIX Pot Hanging Cowl, Terracotta - Ø 100

25-100-PHCMT
£54.99 (including VAT)
Out of stock
Screw-FIX Pot Hanger - Ø 100

Screw-FIX Pot Hanger - Ø 100

25-100-PHS
£24.99 (including VAT)
Out of stock
Your 100MM (4 INCH) Questions Answered

What is the function of a rain cap in a flue system? -

A rain cap is designed to protect the flue pipe from rainwater and debris, preventing moisture buildup and potential damage to the fireplace.

How do I choose the right adaptor for my flue system? +

Are ScrewFIX Fixings easy to install? +

Can I use 100mm (4 inch) flue accessories for a wood-burning fireplace? +

Do I need bottom fixings for my flue system? +

What is the advantage of using a pot hanging cowl in a flue system? +

Can I use ScrewFIX Register Plate Adaptor for a multi-fuel stove? +

When it comes to your fireplace, ensuring proper ventilation is essential for safety and efficiency. Our 100mm (4 inch) flue accessories are crafted with precision engineering to deliver optimal performance. The MI-Flex ScrewFIX Fixings guarantee a secure installation, providing peace of mind for you and your family. With a variety of products available, including rain caps, pot hangers, and adaptors, you can customize your fireplace setup to suit your needs. Invest in quality accessories for long-lasting durability and reliable functionality.
Why Buy 100MM (4 INCH) Products
Whether you are installing a new fireplace or upgrading an existing one, our 100mm (4 inch) flue accessories are suitable for a range of applications. From residential homes to commercial properties, these high-quality products are designed to meet your specific requirements. Create a safe and efficient fireplace system with our top-of-the-line accessories, ensuring proper ventilation and compliance with industry standards. Trust in the durability and performance of our MI-Flex ScrewFIX Fixings to enhance the functionality of your fireplace.

Trusted By Trade Professionals

Our 100MM (4 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 100MM (4 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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