IL - Gas Vent Terminal - Ø 100
At a Glance
- Over 25 years trusted UK performance
- Durable aluminium liner with corrosion‐resistant zalutite casing
- Twin wall insulated design for efficient flue gas venting
- Designed for naturally aspirated domestic gas appliances with draught hoods or diverters
- Versatile application for internal and external installations
- Easy push fit and twist lock joint for quick installation
- Compliant with EN 1856-1, CE and BS EN 9001:2008 standards

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.
We Won't Be Beaten On Price
At National Flues, we continuously monitor competitor prices. This ensures that we consistently offer you the best deals on all our products. Here’s how we keep your costs low:
- Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
- Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
- Operational Efficiency: We have streamlined processes to reduce overhead.
Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.
Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).
“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.
Have Questions?
Phone: 01670 206999
Email: [email protected]
- Info
- Specs
- Install
- FAQs
The IL Gas Vent Terminal - Ø 100mm is a twin wall insulated, pre-fabricated gas vent system that has been trusted in the UK for over 25 years. Renowned for its quality and reliability, this system is specifically designed for naturally aspirated domestic gas-fired appliances equipped with a draught hood or diverter. It is engineered to operate under negative pressure and dry conditions, ensuring safe and efficient venting of flue gases with temperatures not exceeding 250°C.
Constructed with an aluminium liner and a durable zalutite outer casing, separated by a 6mm air gap, the IL Gas Vent Terminal is suitable for both internal and external installations. Note that it is not applicable for condensing or positive pressure applications. Available in 100mm, 125mm, and 150mm diameters, this product ensures versatile compatibility with a variety of gas appliances.
SKU: 24-100-91
Technical Specifications | |
---|---|
Diameter | 100mm |
Inner Material | Aluminium |
Outer Material | Zalutite (steel coated with zinc and aluminium) |
Temperature Rating | Up to 250u00b0C |
System | Twin wall insulated |
Installation | Internal & External |
Distance To Combustibles | 50mm (2 inches) |
Joint Method | Push fit and twist lock |
Warranty | 5 year conditional warranty |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, April 8th. If you need faster stove or fireplace delivery please give us a call. We can often reduce longer lead times if we pay the carrier £25 for express delivery. Visit our Shipping Information page for more information.
Warranty & Returns +
All our products come with warranties. Mi-Flex offers a lifetime guarantee. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.
Price Match Guarantee +
We will match any price like for like. If you find it cheaper within 48 hours, we'll refund the difference.
National Flues Ltd Verdict
The IL Gas Vent Terminal - Ø 100mm is one of our best-selling products, praised for its quality and durability. With nationwide delivery and support for retail and trade customers, National Flues is your trusted partner in fireplace and flue solutions.
The IL Gas Vent Terminal - Ø 100mm is used to ensure safe and efficient venting of gases from naturally aspirated domestic gas-fired appliances with a draught hood or diverter.
National Flues is a trusted supplier of high-quality fireplaces and flues, serving both retail and trade customers across the UK. Rarely beaten on price and known for reliable delivery, National Flues offers secure online payments and a range of top-rated products.
