Increasing Flue Adapter - 125 Rigid to 150 Flex

Connects 125mm (5 inch) stove pipe to 150mm (6 inch) single wall flue at the bottom of chimney stack. HETAS recommend that if burning wood then you should increase the size of the flue liner by 25mm from the appliances spigot size. This is due to the amount of condensates that can be produced from burning unseasoned wood. Made from 316 grade stainless steel, with integral drain hole to let the condensates flow back into the flue.