Vertical balanced flues share the same EZ fit boiler connections as out high level kits. AS with our high level kids it is now possible to create offsets in straight flue runs by using 45° elbows and adjustable extension kits - increasing the versatility of this new range. The terminal section for the vertical flue is black and extends the flue section by a further one metre. This is required for roof windows or opening too close to the terminal.