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Sflue (31093ST) - Short Ext. Bracket Heavy Duty Wall Band - 324mm (22-052)

National Flues introduces the Sflue (31093ST) Short Extension Bracket Heavy Duty Wall Band – a robust, high-performance solution ideal for extending wall-mounted flue systems. Crafted from premium 304 and 316 stainless steel with superior thermal insulation, this heavy duty wall band is designed for both solid fuel and gas/oil appliances. HETAS approved and CE marked, it offers safety, durability, and versatility for woodstoves, gas coal effect fires, oil and gas boilers. Discover the efficient, reliable, and long-lasting choice for your chimney flue system today.
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At a Glance

  • Constructed from premium 304 and 316 stainless steel (0.4mm thick each)
  • Versatile for wood, oil, gas, low sulphur coal and other solid fuel appliances
  • HETAS approved and CE marked for safety and compliance
  • Encapsulated compressed rockwool insulation (density 230kg/m³) for superior thermal protection
  • Secure 8-barbed twist lock mechanism with an easy-to-use locking band
  • Maintains a safe 50mm clearance from combustible materials
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, August 15th. This is based on current lead times for this product. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days, then please give us a call on 01670 206 999. We can sometimes 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 and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

Best Price Match Guarantee +

We will match any price, like-for-like, on a retail basis. Give us a call if you find it cheaper and want to buy from us.

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]

The Sflue (31093ST) Short Extension Bracket is a robust heavy-duty wall band designed to extend wall-mounted flue systems. Ideal for use with solid fuel and gas/oil appliances such as woodstoves, gas coal effect fires, oil, and gas boilers, as well as other solid fuel appliances. This product features a durable construction with an outer skin of 304 grade stainless steel and an inner skin of 316 grade stainless steel, both 0.4mm thick.

Encapsulated compressed rockwool insulation provides excellent thermal protection with a density of 230kg/m3, ensuring safety and efficiency. The Sflue system is HETAS approved and CE marked, with a designation number EN1856-1 T450 N1 D V2 L50040 G50, signifying its compliance with industry standards. The flue parts are secured using an 8-barbed twist lock mechanism with a locking band, making installation straightforward.

For safety, maintain a 50mm distance from any combustible materials.

SKU: 22-052

Technical Specifications
SKU22-052
DesignationEN1856-1 T450 N1 D V2 L50040 G(50)
Materials304 Stainless Steel (0.4mm), 316 Stainless Steel (0.4mm)
InsulationEncapsulated compressed rockwool, density 230kg/m³
Clearance50mm from combustibles
ApprovalHETAS / CE
Fixing Mechanism8-barbed twist lock with locking band
Length324mm
When installing the Sflue (31093ST) Short Extension Bracket, ensure that you follow these guidelines closely to guarantee both safety and performance: • Secure Installation: Use the 8-barbed twist lock mechanism with the provided locking band to achieve a secure connection. • Clearance: Maintain a minimum of 50mm clearance from any combustible materials to reduce the risk of fire hazards. • Fixing Centres: For external applications, reduce the wall band fixing centres from 3.0 metres to 2.5 metres to enhance system stability. • Professional Advice: If unsure about any aspect of the installation, consult a certified installer or refer to the full installation manual provided with your purchase. • Regular Checks: Inspect the installation periodically to ensure all components remain securely fastened and that there is no degradation due to environmental stress.

The Sflue (31093ST) is suitable for solid fuel and gas/oil appliances, including woodstoves, gas coal effect fires, oil and gas boilers, and other solid fuel appliances.

The Sflue (31093ST) has an outer skin made of 304 grade stainless steel and an inner skin made of 316 grade stainless steel, both 0.4mm thick. The insulation is compressed rockwool, encapsulated within twist-lock couplers.

Yes, the Sflue (31093ST) is HETAS approved and CE marked, indicating compliance with industry standards.

The Sflue (31093ST) uses an 8-barbed twist lock mechanism secured with a locking band. It's important to maintain a 50mm distance from any combustible materials during installation.

The designation number for the Sflue system is EN1856-1 T450 N1 D V2 L50040 G50.

In external applications, the spacing for wall band fixing centres should be reduced from 3.0 metres to 2.5 metres to ensure stability.

The insulation used in the Sflue (31093ST) is compressed rockwool with a density of 230kg/m3.

What our experts say!

"The Sflue (31093ST) Short Extension Bracket Heavy Duty Wall Band - 324mm is a top-notch product, perfect for both solid fuel and gas appliances. At National Flues, we ensure secure nationwide delivery for both retail and trade customers."

The Sflue (31093ST) is designed to provide a secure and stable extension for wall-mounted flue systems used with solid fuel and gas/oil appliances.

National Flues is a leading supplier of fireplaces and flues, committed to providing top-quality products at competitive prices. We offer reliable delivery and cater to retail and trade customers nationwide, ensuring secure online payments for retail customers.

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