The Worcester Condensfit II 60/100mm Long Telescopic Flue (part 7716191171) is a durable, adjustable flue kit designed for horizontal wall‑through installations with Worcester Greenstar condensing boilers. Extending from 570 to 790 mm and finished in white aluminium with a black terminal end, this flue ensures safe and efficient expulsion of boiler gases while offering flexibility to suit varying wall thicknesses - making installation simple, clean, and compliant.