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Wall Sleeve – Straight Twin Wall Flue 6 Inch TWPro – Black, HETAS & UKCA Approved
The Wall Sleeve – Straight Twin Flue (6 inch) from TWPro is designed to protect your chimney system as it passes through an external wall. This robust sleeve ensures safe passage for your twin wall flue, allowing you to fill the gap with rockwool for additional insulation and safety. For 45-degree installations, simply taper-cut the sleeve for a flush fit.
Why Choose the Wall Sleeve – Straight Twin Flue (6 Inch) TWPro?
Manufactured with a 316L stainless steel inner and 304 stainless steel outer, both 0.4mm thick, this wall sleeve is fully welded and insulated with high-density compressed rockwool. HETAS approved and UKCA marked, it is suitable for all solid fuel, gas, and oil appliances and is tested up to 600°C. Backed by a 25-year warranty, it’s the ideal solution for safe, compliant flue installations.
Key Features
Wall Protection: Shields chimney system in wall passage
High-Quality Construction: 316L stainless steel inner, 304 stainless steel outer, both 0.4mm thick
Insulated: Fill the gap with rockwool for extra safety
Fully Welded: Robust and durable
Certified & Approved: HETAS approved, UKCA marked, EN1856-1 compliant
Safe Clearance: 50mm distance to combustibles
Warranty: 25 years (conditional), 2 years paint
System: For use with TWPro Twin Wall Flue parts only
Product Specifications
Type: Wall Sleeve – Straight
Internal Diameter: 6 inch (150mm)
External Diameter: 8 inch (200mm)
Inner Material: 316L Stainless Steel, 0.4mm thick
Outer Material: 304 Stainless Steel, 0.4mm thick
Insulation: Compressed rockwool, 200kg/m³
Finish: Black
Approvals: HETAS, UKCA, EN1856-1
Distance to Combustibles: 50mm
Warranty: 25 years (conditional), 2 years paint
Additional Information
FREE Delivery: Available on orders over £100. Click here to check delivery information for your area.
For more wall sleeves and twin wall flue accessories, visit modernstoves.co.uk.
Need advice? Call 0161 439 1400.
