

A 5 ft length of Napoleon's 5"/8" flexible direct vent pipe (GD420): a 5" exhaust pipe running inside an 8" air-intake pipe, with spacers keeping the gap between them even. It ships compressed to 20" and stretches out to the length your run needs; for a longer run, join it to another section with the 5"/8" coupler kit (W175-0196). Napoleon specifies it for its 5"/8" direct vent fireplaces, including the Ascent Linear 56 and 76, Ascent Linear Premium 56 and 76, Ascent X 42, Altitude X, Elevation X, Luxuria, Vector and Tall Linear Vector. Support the run about every 3 ft, and keep flexible and rigid pipe, or different brands' parts, out of the same system. $139.