Sflue (2141805) - Inspection Length - 127mm Ø
At a Glance
- - Robust double-wall construction using 304 stainless steel (outer) and 316 stainless steel (inner) at 0.4mm thickness
- - Compressed rockwool insulation (230kg/m³) for superior heat retention
- - 8-barbed twist-lock system with secure locking band
- - HETAS approved and CE marked for uncompromised safety
- - 15-year warranty backing long-term performance
- - Designed for use with wood, oil, gas, and low sulphur coal appliances

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 Sflue (2141805) Inspection Length - 127mm Ø is an expertly crafted component designed for a variety of solid fuel and gas/oil appliances, including woodstoves, gas coal effect fires, and boilers. With a robust construction, it features an outer skin made from 304 grade stainless steel and an inner skin made from 316 grade stainless steel, each 0.4mm thick. The insulation, made from compressed rockwool with a density of 230kg/m3, is fully encapsulated within twist-lock couplers, ensuring maximum safety and efficiency.
This model is HETAS Approved and CE marked, adhering to the highest standards. Installation is straightforward with its 8-barbed twist lock design secured by a Locking Band. Always maintain a distance of 50mm from any combustible material to ensure safety.
SKU: 22-125-019
Technical Specifications | |
---|---|
SKU | 22-125-019 |
Outer Material | 304 Stainless Steel, 0.4mm thick |
Inner Material | 316 Stainless Steel, 0.4mm thick |
Insulation | Compressed Rockwool (230kg/mu00b3) |
Overall Length | 500mm (with inspection door) |
Inspection Length | 127mm u00d8 |
Clearance Distance | 50mm from combustibles |
Approvals | HETAS / CE |
Warranty | 15 Years |
System | Sflue |
Compatible Fuels | Wood, Oil, Gas, Low sulphur coal |
Design | 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.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
The Sflue (2141805) Inspection Length - 127mm Ø is top-tier for solid fuel and gas/oil appliances. Its robust construction and easy maintenance make it a standout product. Plus, with National Flues' unbeatable prices and reliable nationwide delivery, it's a top choice for both retail and trade customers.
The Sflue (2141805) is designed for use with solid fuel and gas/oil appliances, ensuring safe and efficient operation.
Sflue products are known for their high standards in safety and durability, offering reliable chimney and flue solutions across the UK.
