The Viessmann 60/100 1.95 Metre Flue Extension is a high‑quality concentric flue component designed to increase the length of Viessmann boiler flue systems for safe, efficient routing of combustion gases and fresh air intake. This extension is ideal for installations that require a longer flue run due to building layout or compliance requirements. Built from durable, corrosion‑resistant materials, it provides a secure, airtight fit and is suitable for both internal and external applications. This model is uncuttable, ensuring structural integrity and consistent performance. 

• 1.95‑metre extension for Viessmann 60/100 concentric flue systems 

• Balanced flue design, suitable for internal or external use 

• Uncuttable construction for maximum safety and structural reliability

• Corrosion‑resistant, high‑durability materials withstand heat and environmental exposure

• Pre‑installed seals ensure watertight and gas‑tight connections (varies by supplier) 

• Push‑fit connection system for quick, secure assembly with existing components 

• Ideal for long‑run or complex flue layouts, supporting safe exhaust gas expulsion 

• Length: 1.95 metres 

• Diameter: 60/100mm concentric (60mm exhaust / 100mm air intake) 

• Type: Balanced flue extension (uncuttable)

• Material: Durable, corrosion‑resistant construction 

• Application: Internal or external flue routing; extends coaxial flue systems for installation flexibility

• Compatibility: Viessmann 60/100 concentric flue systems, including Vitodens boilers