Description
Twin Wall to Twin Wall Increaser – 6 Inch (150mm) to 7 Inch (175mm) | Stainless Steel, Insulated, HETAS & CE Approved
Easily connect a 150mm (6 inch) KC Twin Wall Insulated Chimney to a 175mm (7 inch) KC Twin Wall Insulated Chimney with this robust increaser adaptor. Engineered for use with solid fuel, gas, and oil appliances—including woodstoves, gas coal effect fires, and oil boilers—this adaptor provides a secure, fully insulated connection between different chimney sizes, ensuring safe and efficient flue operation.
Why Choose the Twin Wall to Twin Wall Increaser 6 Inch to 7 Inch?
Manufactured with a 304 grade stainless steel outer skin and a 316L grade stainless steel inner skin, both 0.4mm thick, this increaser features high-density compressed rockwool insulation (128kg/m³) for superior heat resistance. The fully welded construction ensures durability and long service life. HETAS approved and CE marked, this adaptor meets all relevant safety and performance standards.
Key Features
Secure Connection: Joins 150mm (6 inch) to 175mm (7 inch) KC Twin Wall Insulated Chimney sections
Premium Construction: 316L stainless steel inner, 304 stainless steel outer, both 0.4mm thick
High-Quality Insulation: Compressed rockwool, 128kg/m³ density
Fully Welded: Strength and longevity for demanding installations
Certified & Approved: HETAS approved, CE marked, EN1856-1 T600 N1 D V2 L50040 G60
Wide Fuel Compatibility: For wood, oil, gas, and low sulphur coal appliances
Safe Clearance: 60mm distance to combustibles
Easy Installation: Locking band supplied for secure fitting
Product Specifications
System: Convesa KC Twin Wall
Connection: 150mm (6 inch) to 175mm (7 inch)
Inner Material: 316L Stainless Steel, 0.40mm thick
Outer Material: 304 Stainless Steel, 0.40mm thick
Insulation: Compressed rockwool, 128kg/m³
Fuels: Wood, oil, gas, low sulphur coal
Distance to Combustibles: 60mm
Approvals: HETAS, CE
Additional Information
FREE Delivery: Available on orders over £100. Click here to check delivery information for your area.
For more chimney adaptors and flue accessories, visit modernstoves.co.uk.
Need expert advice? Call us on 0161 439 1400.
