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Wall Sleeve 45° Adjustable - Ø 125

National Flues presents the Wall Sleeve 45° Adjustable - Ø 125, a premium solution for chimney protection and flue system compliance. Designed for both solid fuel and gas/oil appliances, this adjustable wall sleeve is perfect for wood stoves, gas fireplaces, and oil boilers. With robust dual stainle... More...
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At a Glance

  • 45° adjustable design for flexible installation
  • Dual stainless steel layers (304 outer, 316 inner; both 0.4mm thick) for enhanced durability
  • Compressed rockwool insulation (200kg/m³ TWPro / 128kg/m³) for superior thermal protection
  • HETAS approved and CE marked to meet safety standards
  • Versatile: suitable for wood stoves, gas, oil, and low sulphur coal appliances
Now only £28.49
Including VAT Buy with confidence. If you find this cheaper within 48 hours of checkout, we'll refund the difference.

 

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Have Questions?
Phone: 01670 206999
Email: [email protected]

The Wall Sleeve 45° Adjustable - Ø 125 is designed for chimney systems used with solid fuel and gas/oil appliances, such as wood stoves, gas coal effect fires, and oil and gas boilers. Constructed with a 304 grade stainless steel outer skin and a 316 grade stainless steel inner skin, both 0.4mm thick, this wall sleeve is built for durability and efficiency. The insulation consists of compressed rockwool with a density of 200kg/m³ TWPro / 128kg/m³, ensuring excellent thermal protection.

Fully welded parts guarantee a robust build, and the product is HETAS approved and CE marked. When installing, secure the parts using a Locking Band and maintain the recommended distance from any combustible materials. This adjustable wall sleeve, pre-cut at 45°, allows easy manual extension within the wall, making installation more flexible and straightforward.

SKU: 15-125-100

Technical Specifications
SKU15-125-100
Materials304 Stainless Steel outer / 316 Stainless Steel inner; both 0.4mm thick
InsulationCompressed rockwool (200kg/mu00b3 TWPro / 128kg/mu00b3)
ApprovalsHETAS / CE
Distance To CombustiblesTWPro: 50mm; KC: 60mm
Suitable FuelsWood, Oil, Gas, Low sulphur coal
Dimensionsu00d8 125, Pre-cut 45u00b0 Adjustable Wall Sleeve
Installation AccessoryLocking Band required
• Before installation, verify all components against the supplied instructions. • Secure the wall sleeve using the recommended Locking Band to ensure a stable and robust assembly. • Maintain a minimum clearance from combustible materials: 50mm for TWPro systems and 60mm for KC systems. • Carefully position the insulation (compressed rockwool) to guarantee optimal thermal protection. • For best results, consider professional consultation, particularly if working with multiple flue components or retrofitting older installations.

This wall sleeve is suitable for use with solid fuel and gas/oil appliances, including wood stoves, gas coal effect fires, and oil and gas boilers.

The outer skin is made from 304 grade stainless steel, while the inner skin is constructed from 316 grade stainless steel. Both skins are 0.4mm thick.

The insulation consists of compressed rockwool with a density of 200kg/m³ TWPro / 128kg/m³, providing excellent thermal protection.

Yes, the wall sleeve is HETAS approved and CE marked, ensuring it meets industry standards for safety and performance.

The recommended distance to combustible materials is 50mm for TWPro and 60mm for KC systems.

The wall sleeve parts are secured together using a Locking Band. Ensure you maintain the required distance from combustible materials.

Yes, the wall sleeve is adjustable and can be manually extended within the wall, making it flexible and easy to install.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, April 3rd. 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.

Read our buyers guide for this Wall Sleeve 45° Adjustable - Ø 125

National Flues Ltd Verdict

The Wall Sleeve 45° Adjustable - Ø 125 is an essential component in any flue system, ensuring safety and performance. With National Flues' unbeatable prices and reliable nationwide delivery, both retail and trade customers can trust us for their fireplace and flue needs.

The Wall Sleeve 45° Adjustable is used to protect the chimney in the wall passage and ensure safe passage of the flue system through the exterior wall.

National Flues is a leading UK supplier of fireplaces and flues, offering high-quality products to both retail and trade customers. We pride ourselves on unbeatable prices and reliable nationwide delivery.

 

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Secure your safety and performance by ordering the Wall Sleeve 45° Adjustable today.

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