IL - 90° Tee - Ø 100
At a Glance
- - Over 25 years of proven reliability in the UK market
- - Twin wall insulated design ensures optimal heat management
- - Durable aluminium liner withstands flue gas up to 250°C
- - Corrosion-resistant zalutite outer case protects against the elements
- - Versatile compatibility with naturally aspirated domestic gas-fired appliances
- - Suitable for both internal and external applications
- - Requires a tee cap accessory for a complete installation

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 - 90° Tee - Ø 100 is a twin wall insulated pre-fabricated gas vent explicitly designed for naturally aspirated domestic gas-fired appliances. With 25 years of esteemed presence in the UK market, this gas vent has become synonymous with quality and reliability. It supports appliances equipped with a draught hood or diverter and functions under negative pressure and dry conditions.
Withstanding flue gas temperatures up to 250°C, the IL gas vent is available in 100mm, 125mm, and 150mm diameters. Its robust design includes an aluminium liner and a zalutite outer case, separated by a 6mm air gap, making it suitable for both internal and external applications. Please note, it is not suitable for condensing or positive pressure applications.
The 90-degree tee requires an accompanying tee cap for optimal performance.
SKU: 24-100-31
Technical Specifications | |
---|---|
SKU | 24-100-31 |
System | IL |
Inner Material | Aluminium |
Outer Material | Zalutite (coated steel) |
Flue Gas Temperature | Up to 250u00b0C |
Diameter Options | 100mm, 125mm, 150mm |
Distance To Combustibles | 50mm (2 Inches) |
Warranty | 5 year conditional warranty |
Joint Method | Push fit and twist lock |
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.
National Flues Ltd Verdict
At National Flues, we are impressed with the IL - 90° Tee - Ø 100 for its exceptional build quality and dependability. With over 25 years of proven performance, this gas vent component is ideal for your domestic gas appliances. We deliver nationwide and cater to both retail and trade customers.
The IL - 90° Tee - Ø 100 is designed to connect different sections of a twin wall insulated gas vent system for naturally aspirated domestic gas-fired appliances.
IL is a well-established brand known for delivering high-quality and reliable gas vent components for over 25 years. Their products are trusted by both retail and trade customers nationwide.
