Choosing the right Ideal Evomax Flue Extension Kit (For Evomax 30,40,60 & 80) 80-125mm 1 Metre 213261, is an important decision, and it's one we're sure to help you get right. We stock a wide range of standard products, along with many other suppliers to give you the choice of Domestic Systems that you need to make the most informed decision. From as small as a radiator valve, to as large as a boiler, we offer a broad range of styles and budget options to suit every need.