Free Delivery over £100+ 5on Trustpilot Browse our popular stoves Fast Mainland UK Delivery Buy stoves with install packs Call 01670 206 999 for help

Wall Sleeve - Ø 175 (15-175-098)

Discover National Flues' Wall Sleeve Ø175 – a premium chimney flue sleeve designed for the UK market. This high-quality product offers robust protection for your chimney, ensuring safe passage through exterior walls. Read more...
Now only £37.99
Give us a call if you find it cheaper and we'll normally price match.
  • Fast deliveryMonday, November 17th*
  • Best PriceCall us to beat any price you found online.
  • Secure checkoutCard· Google/Apple Pay· Klarna· Paypal

 

Payment Options

At a Glance

  • Robust dual stainless steel construction (304 outer, 316 inner, both 0.4mm thick)
  • Suitable for wood, oil, gas, & low sulphur coal appliances
  • Compressed rockwool insulation (200kg/m³ for TWPro; 128kg/m³ for KC models)
  • HETAS approved & CE marked for safety
  • Maintains safe distance to combustibles (50mm TWPro, 60mm KC)
  • Simple installation with locking band
  • Adaptable for 45-degree wall passages with a taper-cut

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: sales@nationalflues.com

The Wall Sleeve Ø175 is designed to protect your chimney in the wall passage when the flue system traverses an exterior wall. Perfect for use with solid fuel and gas/oil appliances, including wood stoves, gas fires, and boilers. Its robust construction features an outer skin of 304-grade stainless steel and an inner skin of 316-grade stainless steel, both 0.4mm thick, with compressed rockwool insulation offering a density of 200kg/m3 (TWPro) and 128Kg/m3 (KC).

Not only is this sleeve fully welded for durability, but it also maintains a safe distance to combustibles—50mm for TWPro and 60mm for KC models. It is HETAS approved and CE marked, guaranteeing the highest safety standards. Installation is straightforward, requiring a locking band to secure the chimney parts, and the gap between the flue and the sleeve can be filled with rockwool for added protection.

If you're installing at a 45-degree angle, a simple taper-cut using a grinder or hacksaw ensures a perfect fit.

SKU: 15-175-098

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, November 17th. This is based on current lead times. Bear in mind that it is a busy time of year. If you need a product delivered by a specific time in the next 7 days, then please give us a call on 01670 206 999. Visit our Shipping Information page for more information.

About National Flues Ltd +

We began over 30 years ago as a fireplace shop in the North East. We now supply hundreds of trade professionals and thousands of retail customers, all across the UK, every month. We are still a family owned business, lead by the MD Neil, and always try our best to deliver the best possible experience. We also price match, so give us a call if you find this cheaper and want to buy from us. Visit our about us page to read a bit more.

Technical Specifications
Product NameWall Sleeve - Ø 175
SKU15-175-098
Materials304 Stainless Steel 0.40mm, 316L Stainless Steel 0.40mm
Insulation200kg/m³, 128kg/m³
Safety ApprovalsHETAS, CE
Distance To Combustibles50mm, 60mm
CompatibilityWood, Oil, Gas, Low sulphur coal appliances
InstallationLocking band required, gap fill with rockwool, taper-cut option for 45° installations
Installation is straightforward: First, secure the Wall Sleeve in the wall passage using the provided locking band. Ensure the gap between the flue and the sleeve is completely filled with rockwool insulation for optimal safety. For installations in a 45-degree wall passage, carefully taper-cut the sleeve with a grinder or hacksaw to achieve a perfect fit. Always double-check that combustible materials are kept at the required distances (50mm for TWPro models and 60mm for KC models) during installation. Follow all manufacturer guidelines and safety standards to ensure a reliable and secure chimney setup.

The Wall Sleeve Ø175 is compatible with solid fuel and gas/oil appliances, including wood stoves, gas fires, and boilers.

The outer skin is made from 304-grade stainless steel and the inner skin is made from 316-grade stainless steel, both 0.4mm thick.

The Wall Sleeve Ø175 features insulation made from compressed rockwool with a density of 200kg/m3 for TWPro and 128Kg/m3 for KC models.

Yes, the Wall Sleeve Ø175 is HETAS approved and CE marked, meeting the highest safety standards.

Installation involves securing the chimney parts with a locking band. Ensure you maintain the required distance from combustibles and fill the gap between the flue and sleeve with rockwool.

Yes, for a 45-degree wall passage, you will need to taper-cut the sleeve using a grinder or hacksaw to ensure a flush fit within the wall.

For TWPro, the distance to combustibles is 50mm, and for KC models, it is 60mm.

 

Call the Experts   8am-5pm
👀 6 people watching this