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Wall Sleeve - Ø 100 (15-100-098)

National Flues presents the Wall Sleeve - Ø 100, a premium chimney flue protection solution designed for UK homes and commercial installations. This high-quality stainless steel wall sleeve is engineered to meet CE and HETAS standards, ensuring robust performance for wood, oil, gas, and low sulphur coal appliances. Ideal for both new builds and retrofits, this product offers reliable insulation and safety benefits, making it a preferred choice among homeowners and professionals alike.
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£24.49
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At a Glance

  • Premium 304/316 stainless steel construction for long-lasting durability
  • Complies with CE and HETAS safety standards
  • Suitable for wood, oil, gas, and low sulphur coal appliances
  • Easy installation with a secure Locking Band
  • Versatile design ideal for straight or 45° tapered wall installations
  • Efficient Rockwool insulation to maintain safe clearances

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 Wall Sleeve - Ø 100 is a premium component designed to safeguard your chimney flue system during wall passage. Suitable for solid fuel and gas/oil appliances such as woodstoves, gas coal effect fires, and boilers, this wall sleeve is constructed with an outer skin of 304 grade stainless steel and an inner skin of 316 grade stainless steel, both 0.4mm thick. The insulation comprises compressed rockwool at a density of 200kg/m3 TWPro and 128Kg/m3 KC.

Fully welded for durability, it maintains an essential 50mm distance from combustibles in TWPro and 60mm in KC applications. CE marked and HETAS approved, it meets the stringent standards EN1856-1 T600 N1 W V2 L50040 G50 and more. Installation is streamlined via a Locking Band, ensuring secure assembly.

For those installing through an exterior wall at 45 degrees, taper-cutting the sleeve ensures a flush fit, easily achieved with a grinder or hacksaw. Fill the gap between the flue and sleeve with Rockwool for optimal protection.

SKU: 15-100-098

Technical Specifications
SKU15-100-098
Product NameWall Sleeve - Ø 100
Outer Material304 Stainless Steel, 0.40mm thick
Inner Material316L Stainless Steel, 0.40mm thick
InsulationCompressed Rockwool (TWPro: 200kg/m³, KC: 128kg/m³)
ApprovalsCE Marked, HETAS Approved
Required ClearancesTWPro 50mm / KC 60mm
Applicable FuelsWood, Oil, Gas, Low sulphur coal
StandardsEN1856-1 T600 N1 W V2 L50040 TWPro G50/ KC G60
• Ensure a minimum clearance of 50mm for TWPro systems or 60mm for KC systems between the flue and any combustible materials. • Install using the provided Locking Band to secure the Wall Sleeve around the flue, ensuring an even and secure fit. • For installations through an exterior wall where the passage is at 45°, taper-cut the sleeve for a flush finish. This can be achieved using a grinder or hacksaw. • Once in place, fill the gap between the flue and sleeve with Rockwool insulation for optimal thermal protection. • Always double-check measurements during installation to comply with safety standards and maintain the recommended spacing.

The Wall Sleeve - Ø 100 is used to protect the chimney flue as it passes through exterior walls, reducing risk of heat damage to the wall structure.

Yes, the Wall Sleeve is suitable for solid fuel, gas, and oil appliances, including woodstoves, gas coal effect fires, and boilers.

The Wall Sleeve is constructed from 304 grade stainless steel for the outer skin, and 316 grade stainless steel for the inner skin, both being 0.4mm thick. It also contains high-density compressed rockwool insulation.

A distance of 50mm is required for TWPro systems and 60mm for KC systems between the flue and any combustibles such as wood or plasterboard.

Yes, the Wall Sleeve is CE marked and HETAS approved, complying with standards such as EN1856-1 T600 N1 W V2 L50040 G50.

The Wall Sleeve is installed with a Locking Band that securely connects to the chimney flue. Ensure to maintain the recommended distance from combustibles during installation.

Yes, if you need to pass the flue through the wall at a 45-degree angle, you can taper-cut the sleeve using a grinder or hacksaw to fit flush in the wall.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Wednesday, April 30th. 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 on a retail basis. Give us a call if you find it cheaper and want to buy from us.

Read our review in our Wall Sleeve - Ø 100 buyers guide

Don’t compromise on safety – secure your Wall Sleeve now for dependable performance.

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