Vaillant 1m Air Flue Duct Extension Kit 970mm 60/100mm 303903

Extend your Vaillant boiler flue safely with the Vaillant Flue Duct Extension 1000 mm (303903), compatible with ecoTEC and ecoMAX boilers. Made from durable materials for reliable performance, this extension ensures proper venting, maintains system efficiency, and simplifies horizontal or vertical flue installations. Perfect for installers and homeowners looking for a compliant, long-lasting solution.