IL - Length 914mm (36in) - Ø 150
At a Glance
- - Premium twin wall construction with an aluminium liner and robust zalutite outer casing
- - Fixed length of 914mm (36in) designed for Ø 150 gas vent applications
- - Engineered for naturally aspirated domestic gas fired appliances with draught hoods or diverters
- - Handles flue gas temperatures up to 250°C under negative pressure operation
- - Suitable for both internal and external installation (non-condensing, non-positive pressure)
- - Certified to EN 1856-1 and BS EN 9001:2008 standards
- - 5 year conditional warranty ensuring peace of mind

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 914mm (36in) Length - Ø 150 Twin Wall Insulated Gas Vent Pipe stands out as a premium solution for naturally aspirated domestic gas fired appliances equipped with a draught hood or diverter. With over 25 years of use in the UK, it has earned a reputation for robustness and quality. This gas vent operates under negative pressure and dry conditions, safely handling flue gas temperatures up to 250°C.
Available in three diameter sizes: 100mm, 125mm, and 150mm, the IL system comprises an aluminum liner and a robust zalutite outer casing, separated by a 6mm air gap. Ideal for both internal and external installations, it is not suitable for condensing or positive pressure applications. Crafted for excellence, this flue system ensures optimal safety and efficiency, making it a dependable choice for homes across the UK.
SKU: 24-150-11
Technical Specifications | |
---|---|
Product Name | IL - Length 914mm (36in) - Ø 150 Twin Wall Insulated Gas Vent Pipe |
Length | 914mm (36in) |
Diameter | Ø 150mm |
Inner Material | Aluminium |
Outer Material | Zalutite (Pre-coated steel with zinc and aluminium for corrosion protection) |
Max Temperature | 250°C |
Air Gap | 6mm |
Fuel Type | Gas |
Suitable Application | Naturally aspirated domestic gas fired appliances with draught hoods/diverters |
Clearance To Combustibles | 50mm (2 inches) |
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.
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National Flues Ltd Verdict
The IL 914mm (36in) Length - Ø 150 Gas Vent Pipe is a top-tier product, combining over two decades of reliability with superior performance. National Flues delivers this outstanding gas vent nationwide, catering to both retail and trade customers with unmatched pricing and dependability.
The IL 914mm (36in) Length - Ø 150 Twin Wall Insulated Gas Vent Pipe is designed to provide efficient venting for naturally aspirated domestic gas fired appliances.
National Flues is a trusted UK supplier specializing in fireplaces and flues, known for competitive pricing, reliable delivery, and exceptional service to both retail and trade customers nationwide.
