This telescopic extension from Worcester Bosch is ideal for use with compatible flues. It is a 1mtr extension flue extension designed to be used with the Worcester Greenstar Boiler Ranges. Most commonly used in vertical flue installations, where the original flue pipe isn't long enough, the 1000mm flue extension, from Worcester, 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 and aesthetically pleasing, allowing it to blend in with the rest of the boiler system.