WORCESTER BOSCH Flue Extension 60 / 100 mm 1 Metre - 7716191083 Genuine Most commonly used in vertical flue installations, where the original flue pipe isn't long enough. 1000mm flue extension allows you to increase the length of a standard flue pipe, permitting you to have more control over where plume is released from the property, avoiding neighbouring properties and other unsuitable areas. The flue extension is both quick to install in with the rest of the boiler system. Compatible with all Greenstar boilers Extend the flue system to the desired exit spot Aesthetically pleasing design Quick and simple to install