Sflue (2141405) - Adjustable Pipe 500-850mm - 127mm Ø
At a Glance
- - Adjustable pipe length from 500mm to 850mm
- - Durable twin-wall construction using 304-grade (outer) and 316-grade (inner) stainless steel
- - HETAS approved and CE marked for safety and compliance
- - Compressed rockwool insulation (230kg/m³) for excellent heat resistance
- - Secure 8-barbed twist lock mechanism with Locking Band for ease of assembly
- - Minimum 50mm clearance to combustibles ensures a safe 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
Ideal for solid fuel and gas/oil appliances, the Sflue (2141405) adjustable pipe extends from 500mm to 850mm, providing the flexibility you need when standard lengths fall short. Constructed with a 0.4mm thick outer skin of 304-grade stainless steel and a 0.4mm thick inner skin of 316-grade stainless steel, this pipe promises durability and high performance. Compressed rockwool insulation ensures robust heat resistance, with a commendable density of 230kg/m³ encapsulated within twist-lock couplers.
Fully laser welded and HETAS approved, this CE-marked product ensures a secure and compliant installation. Designed with an 8-barbed twist lock mechanism, the Sflue twin wall insulated chimney parts are easy to secure using a Locking Band. Ensure a 50mm clearance from combustibles for safe installation.
Designation Number: EN1856-1 T450 N1 D V2 L50040 G50.
SKU: 22-125-014
Technical Specifications | |
---|---|
SKU | 22-125-014 |
Adjustable Length | 500-850 mm |
Pipe Diameter | 127 mm |
Outer Material | 304-grade Stainless Steel (0.40mm thick) |
Inner Material | 316-grade Stainless Steel (0.40mm thick) |
Insulation | Compressed Rockwool, 230kg/mu00b3 |
Certifications | HETAS, CE (EN1856-1 T450 N1 D V2 L50040 G50) |
Installation Clearance | 50mm |
Warranty | 15 Years |
Lock Mechanism | 8-barbed twist lock with Locking Band |
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.
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National Flues Ltd Verdict
The Sflue (2141405) - Adjustable Pipe 500-850mm - 127mm Ø is a top-notch, versatile flue part that caters to both the retail and trade sectors. We're rarely beaten on price and offer reliable nationwide delivery.
The Sflue adjustable pipe is designed to connect solid fuel, gas, and oil appliances to a chimney flue system, providing flexibility in length for secure and compliant installations.
National Flues is a leading supplier of fireplaces and flues across the UK, known for competitive pricing and reliable service for both retail and trade customers.
