and has a long single-wall metal stove pipe. Over the outside of this he’s placed a pair of T pieces joined by a longer length of pipe all of a larger bore, and a mains-powered fan forces air ...

They are also used with gas stove vents, pellet stove vents, and other heating systems. Flues are ducts or pipes that use buoyancy or the stack effect, sometimes in conjunction with a blower, to ...