The furnace flue pipe is an important component because it serves as the channel through which exhaust gasses are vented to the outside of the building. The furnace flue parts are typically made of metal and are attached to the furnace on one end and to a chimney or other venting system on the other end. For an efficient and reliable HVAC system, the furnace flue pipe replacement ... https://www.partshnc.com/furnace-parts/flue-parts