Includes Standard Horizontal Flue Kit & Timer DHW 11.5 litres/min 5.9-19.7 kW H 780mm x W 400mm x D 358mm 2 year warranty For your convenience this product is a boiler, standard flue and timer as a bundled pack. This is more economical for you than purchasing the three items separately. You will not need to purchase the flue to complete the installation. PLEASE NOTE - there is currently a delay on the supply of these products, please e-mail to obtain estimated delivery time.