Sflue Black (31093STB) - Short Ext. Bracket Heavy Duty Wall Band - 324mm
At a Glance
- Heavy duty construction using 304 and 316L stainless steel
- Robust design with 0.40mm thick inner and outer skins
- HETAS approved and CE marked for safety compliance
- Laser welded for precision, ensuring durability
- Designed for external application, optimising fixing intervals from 3.0m to 2.5m
- Compatible with solid fuel and gas/oil 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 Black (31093STB) - Short Extension Bracket Heavy Duty Wall Band is an indispensable element for securing your chimney flue. Designed for use with solid fuel and gas/oil appliances including wood stoves, gas coal effect fires, as well as oil and gas boilers, this wall band ensures optimal safety and efficiency. Constructed with a robust outer skin of 304 grade stainless steel and an inner skin of 316 grade stainless steel, both skins are 0.4mm thick.
The insulation comprises densely packed rockwool at 230kg/m³, encapsulated within twist-lock couplers. This durable construction is fully laser welded and requires a safe distance of 50mm from combustibles.This product is HETAS approved and CE marked, confirming its compliance with EN1856-1 T450 N1 D V2 L50040 G50 standards. The twist-lock twin wall insulated chimney parts are easily secured using a locking band, promising hassle-free installation.
SKU: 42-052
Technical Specifications | |
---|---|
SKU | 42-052 |
Size | 324mm |
Inner Material | 316L Stainless Steel (0.40mm) |
Outer Material | 304 Stainless Steel (0.40mm) |
Fuel Compatibility | Wood, Oil, Gas, Low sulphur coal |
Insulation | Densely packed Rockwool at 230kg/mu00b3 |
Approvals | HETAS / CE |
Distance To Combustibles | 50mm |
Warranty | 15 Years manufacturing defect warranty; 2 Years paint Warranty |
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 Black Short Extension Bracket is an essential component for any solid fuel or gas/oil heating system. It's built to last with high-quality stainless steel. At National Flues, we offer this and many other top-notch products with reliable nationwide delivery, serving both retail and trade customers.
This product is designed to securely extend wall bands for chimney flues in solid fuel and gas/oil heating systems.
National Flues is a leading supplier of high-quality fireplaces and flues across the UK, committed to excellent prices, reliable delivery, and outstanding customer service for both retail and trade customers.
