IL - Length 457mm (18in) - Ø 150
At a Glance
- - Premium twin wall insulated design for superior performance
- - Robust aluminium liner paired with a durable zalutite outer casing
- - Engineered for naturally aspirated domestic gas appliances with draught hood or diverter
- - Versatile installation – suitable for both internal and external use
- - Withstands flue gas temperatures up to 250°C for reliable operation

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 457mm (18in) Length Gas Vent Pipe with a 150mm diameter is a premium twin wall insulated pre-fabricated domestic gas vent, trusted by UK households for over 25 years. It boasts an aluminium liner encased in a durable zalutite outer shell, separated by a 6mm air gap. This superior construction ensures efficient venting for naturally aspirated gas-fired appliances equipped with a draught hood or diverter.
Fit for use under negative pressure and dry conditions, it can handle flue gas temperatures up to 250°C. Available in 100mm, 125mm, and 150mm diameters, this versatile product is suitable for both internal and external installations. Please note, it is not designed for condensing or positive pressure applications.
SKU: 24-150-12
Technical Specifications | |
---|---|
Product Name | IL - Length 457mm (18in) - u00d8 150 |
Length | 457mm (18in) |
Diameter | 150mm |
Inner Material | Aluminium |
Outer Material | Zalutite (coated steel) |
Fuel | Gas |
Flue Gas Temperature | Up to 250u00b0C |
Air Gap | 6mm |
Join Method | Push fit and twist lock |
Approvals | CE, BS EN 9001:2008 |
Warranty | 5-year conditional warranty |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, April 4th. 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.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
The IL 457mm (18in) Length Gas Vent Pipe stands out with its exceptional build quality and reliability. Ideal for domestic gas appliances, it’s perfect for both trade and retail customers. With our nationwide delivery and competitive pricing, National Flues ensures you get the best deal.
The IL gas vent pipe ensures safe and efficient venting of flue gases from naturally aspirated domestic gas-fired appliances.
National Flues is a trusted supplier of fireplaces and flues, known for their competitive pricing, reliable delivery, and exceptional customer service for both retail and trade customers.
