Tee 90° reduced connection Ø 175 - Ø 300
At a Glance
- Made from high-grade 316L stainless steel
- Designed for cascade header systems
- Push-fit jointing system with a secure Locking Band
- High-pressure sealing gaskets (P1/H1) for leak-free installation
- CE marked to meet strict safety standards
- Suitable for boilers, ovens, ventilation systems and chimney shaft liners

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 Tee 90° reduced connection Ø 175 - Ø 300 is a versatile and essential component for any advanced flue system. Designed for cascade header systems, this reducing tee is constructed from high-grade 316L stainless steel, ensuring unmatched durability and resistance to high temperatures. It features high-pressure sealing gaskets P1/H1, making it suitable for non-condensing and condensing applications.
This modular flue system is ideal for boilers, ovens, ventilation systems, and chimney shaft liners. The push-fit jointing system, complete with a Locking Band, ensures straightforward installation, and the system is CE marked for compliance and safety.
SKU: 3-300-R90-175
Technical Specifications | |
---|---|
Material | 316L Stainless Steel |
Connection Size | u00d8175 - u00d8300 |
Pressure Seals | P1/H1 High-pressure sealing gaskets |
Installation | Push-fit jointing system with Locking Band |
Standards | CE Marked, EN 1856-1 compliant |
Suitable Fuels | Gas, Oil |
Distance To Combustibles | 50mm |
Warranty | 10 Years |
Applications | Boilers, ovens, ventilation systems, chimney shaft liners |
T200 H1 W Vm L50040 O(50) for Ø 80 to Ø 200, and T200 H1 W Vm L50050 O(50) for Ø 250 to Ø 400.
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, April 25th. 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 Tee 90° Reduced Connection Ø 175 - Ø 300 is a reliable and versatile addition to any flue system. Crafted from high-grade 316L stainless steel, this component is CE-marked and designed for durability. With our nationwide delivery and competitive pricing, National Flues ensures both retail and trade customers receive top-quality products swiftly and securely.
The Tee 90° Reduced Connection Ø 175 - Ø 300 is designed to facilitate efficient gas flow in modular single wall flue systems, primarily for use in cascade header systems.
National Flues is a leading supplier of high-quality fireplaces and flues to both retail and trade customers across the UK. Known for competitive pricing and reliable delivery, they offer secure online payments and exclusive trade accounts.
