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MI-Flex 904L 125MM (5 Inch) Terminals - Premium Flue Terminals - National Flues

Explore our range of MI-Flex 904L 125MM (5 Inch) Terminals, designed to provide optimal flue ventilation for your fireplace. These premium terminals ensure safety and efficiency in your flue system setup, offering reliable performance and durability.
Explore our range of MI-Flex 904L 125MM (5 Inch) Terminals, designed to provide optimal flue ventilation for your fireplace. These premium terminals ensure safety and efficiency in your flue system setup, offering reliable performance and durability.


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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.

£10.99 £132.99
Showing 20 of 23 items
Mini Pot Hanging Cowl 1mm (Natural) - Ø 125

Mini Pot Hanging Cowl 1mm (Natural) - Ø 125

20-125-MINIPH1
£124.99 (including VAT)
In stock
Mini Pot Hanging Cowl 1mm (Painted) - Ø 125

Mini Pot Hanging Cowl 1mm (Painted) - Ø 125

20-125-MINIPHT1
£132.99 (including VAT)
In stock
Pot Hanger with AD Cowl - Ø 125

Pot Hanger with AD Cowl - Ø 125

20-125-PHAD
£101.99 (including VAT)
In stock
Pot Hanger with AD Cowl (Terracotta) - Ø 125

Pot Hanger with AD Cowl (Terracotta) - Ø 125

20-125-PHADT
£101.99 (including VAT)
In stock
MI-FLEX Pot Hanging Cowl (Natural) - Ø 125

MI-FLEX Pot Hanging Cowl (Natural) - Ø 125

20-125-PHCM
£59.99 (including VAT)
In stock
MI-FLEX Support Pot Hanging Cowl (Natural) - Ø 125

MI-FLEX Support Pot Hanging Cowl (Natural) - Ø 125

20-125-PHCM-S
£73.99 (including VAT)
In stock
MI-FLEX Pot Hanging Cowl (Terracotta) - Ø 125

MI-FLEX Pot Hanging Cowl (Terracotta) - Ø 125

20-125-PHCMT
£59.99 (including VAT)
In stock
MI-FLEX Support Pot Hanging Cowl (Terracotta) - Ø 125

MI-FLEX Support Pot Hanging Cowl (Terracotta) - Ø 125

20-125-PHCMT-S
£76.99 (including VAT)
In stock
Top Insert Sleeve with Rain Cap - Ø 125

Top Insert Sleeve with Rain Cap - Ø 125

20-125-PSRC
£31.99 (including VAT)
In stock
Rain Cap - Ø 125

Rain Cap - Ø 125

20-125-RC
£25.99 (including VAT)
In stock
MI-FLEX FastFix-Screw Hanging Cowl (Terracotta) - Ø125

MI-FLEX FastFix-Screw Hanging Cowl (Terracotta) - Ø125

21-125-PHCMT
£55.99 (including VAT)
In stock
MI-FLEX Pot Hanging Cowl (Terracotta) - Ø 125

MI-FLEX Pot Hanging Cowl (Terracotta) - Ø 125

25-125-PHCMT2
£57.99 (including VAT)
In stock
Screw-FIX Pot Hanger - Ø 125

Screw-FIX Pot Hanger - Ø 125

25-125-PHS
£25.99 (including VAT)
In stock
Screw-FIX Rain Cap - Ø 125

Screw-FIX Rain Cap - Ø 125

25-125-RC
£26.99 (including VAT)
In stock
Pot Hanging Cowl 1mm (Natural) - Ø 125

Pot Hanging Cowl 1mm (Natural) - Ø 125

20-125-PHCM1
£67.99 (including VAT)
Out of stock
PH Cowl - Ø 125

PH Cowl - Ø 125

20-125-PHCMB
£66.99 (including VAT)
Out of stock
PH Cowl - Buff / Straps / Mesh x 125mm - Ø 125

PH Cowl - Buff / Straps / Mesh x 125mm - Ø 125

20-125-PHCMC
£94.99 (including VAT)
Out of stock
Pot Hanging Cowl 1mm (Painted) - Ø 125

Pot Hanging Cowl 1mm (Painted) - Ø 125

20-125-PHCMT1
£73.99 (including VAT)
Out of stock
MI-FLEX Pot Hanging Cowl (Terracotta) Ø 400 Lid - Ø 125

MI-FLEX Pot Hanging Cowl (Terracotta) Ø 400 Lid - Ø 125

20-125-PHCMT400
£69.99 (including VAT)
Out of stock
MI-FLEX Square Pot Hanging Cowl (Natural) - Ø 125

MI-FLEX Square Pot Hanging Cowl (Natural) - Ø 125

20-125-SPHCM
£71.99 (including VAT)
Out of stock
Your Terminals Questions Answered

What material are MI-Flex 904L 125MM (5 Inch) Terminals made of? -

MI-Flex 904L 125MM (5 Inch) Terminals are constructed from high-grade 904L stainless steel, known for its superior resistance to corrosion and heat.

Are MI-Flex 904L 125MM (5 Inch) Terminals easy to install? +

How do MI-Flex 904L 125MM (5 Inch) Terminals enhance safety? +

Can MI-Flex 904L 125MM (5 Inch) Terminals be used for gas appliances? +

Do MI-Flex 904L 125MM (5 Inch) Terminals require regular maintenance? +

What sizes are available for MI-Flex 904L 125MM (5 Inch) Terminals? +

Are MI-Flex 904L 125MM (5 Inch) Terminals suitable for all weather conditions? +

The MI-Flex 904L 125MM (5 Inch) Terminals are crafted with precision engineering to meet the highest standards in the industry. Made from premium 904L stainless steel, these terminals are resistant to corrosion and high temperatures, ensuring longevity and performance. Easy to install and maintain, these terminals are suitable for various flue systems, providing a sleek and effective solution for your fireplace needs.
Why Buy Terminals Products
MI-Flex 904L 125MM (5 Inch) Terminals are ideal for both residential and commercial applications. Whether you have a traditional fireplace or a modern wood burner, these terminals offer excellent venting capabilities, promoting smooth airflow and enhancing the overall efficiency of your heating system. Trust in MI-Flex terminals for a safe and reliable flue solution that meets all your ventilation requirements with ease.

Trusted By Trade Professionals

Our Terminals 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 Terminals 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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