× National Flues
We Won't Be Beaten On Price.
Free Delivery on Orders Over £100
100% 5 Star Reviews on Trustpilot
Free Flue Design Service Available
Need Help? 01670 206999 (8am-5pm)

Wall Sleeve 45° Adjustable - Ø 175 (15-175-100)

National Flues proudly presents the Wall Sleeve 45° Adjustable - Ø 175, a top-tier chimney flue accessory engineered for durability and safety. This superior wall sleeve not only meets HETAS and CE standards, but also offers versatile application across a range of heating systems including wood, oil, gas, and coal boilers. Enhance your chimney installation with a product that combines premium stainless steel construction, adjustable precision, and reliable rockwool insulation.
Hover to Zoom / Click for Gallery
£36.49
Give us a call if you find it cheaper and we'll try to price match.

 

Payment Options

At a Glance

  • 304-grade stainless steel outer layer and 316-grade stainless steel inner layer (0.40mm thick)
  • 45° adjustable design for a secure and custom fit
  • Robust compressed rockwool insulation (200kg/m³ for TWPro; 128kg/m³ for others)
  • HETAS Approved and CE marked for safety and compliance
  • Locking Band installation ensures firm and reliable attachment
  • Versatile use with wood, oil, gas, and coal fuel systems

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 45° Adjustable - Ø 175 is specifically designed to protect your chimney flue system when passing through exterior walls. Ideal for solid fuel, gas coal effect fires, oil, and gas boilers, this wall sleeve ensures safety and durability. Constructed with a 304-grade stainless steel outer layer and a 316-grade stainless steel inner layer, both with a thickness of 0.4mm, it offers robust protection.

The insulation is made from compressed rockwool, providing a density of 200kg/m3 for TWPro and 128kg/m3 for other elements. Fully welded for maximum strength, this wall sleeve meets stringent standards and is HETAS Approved and CE marked. Installation is straightforward with a Locking Band and requires a safe clearance distance from any combustible materials.

SKU: 15-175-100

Technical Specifications
Outer Material304 Stainless Steel
Inner Material316 Stainless Steel
Material Thickness0.40mm
InsulationCompressed Rockwool (200kg/mu00b3 for TWPro, 128kg/mu00b3 for others)
Adjustability45u00b0 adjustable
ApprovalHETAS / CE
Clearance To Combustibles50mm (TWPro) / 60mm (KC)
Diameter175mm
Suitable ForSolid fuel, gas coal effect fires, oil and gas boilers
Preparation: Ensure the installation area meets the necessary clearance from combustible materials. Installation Steps: 1. Position the wall sleeve in the designated area where the chimney passes through the wall. 2. Adjust the 45° pre-cut angle to allow for a secure manual extension within the wall. 3. Secure the sleeve in place using the integrated Locking Band to ensure stability. 4. Fill any gaps between the flue and the sleeve with high-quality rockwool insulation. Warning: Always adhere to the prescribed clearance distances (50mm for TWPro; 60mm for KC) and consult a professional if you are uncertain about any aspects of the installation procedure.

It is suitable for use with solid fuel, woodstoves, gas coal effect fires, oil and gas boilers, and other solid fuel appliances.

The outer skin is made of 304-grade stainless steel, and the inner skin is made of 316-grade stainless steel, both with a thickness of 0.4mm. It also features compressed rockwool insulation.

The Wall Sleeve should be secured using a Locking Band, ensuring the correct distance is maintained from any combustible materials.

Yes, it is CE marked and also HETAS Approved, meeting all necessary safety and quality standards.

The rockwool insulation has a density of 200kg/m3 for TWPro and 128kg/m3 for other elements.

The required distance to combustibles is 50mm for TWPro and 60mm for KC.

Yes, the Wall Sleeve is adjustable and can be manually extended to fit within the wall securely.
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 45° Adjustable - Ø 175 buyers guide

Order now to fortify your flue system and ensure lasting protection, or call 01670 206 999 for immediate assistance.

Your recently viewed products:

Multiple Payment Options- including Klarna, Clearpay, Mastercard, Visa and Paypal