
Dryer Ducts - Are Yours Up to Code? ⋆ C&W Appliance Service
10/12/2019· Dryer manufacturers prefer semi-rigid flexible ducts over foil, because the metal doesn’t burn unless the temperature reaches 482 F — a fire can be contained until it goes out. As well, metal ducts don’t sag with accumulation of moisture, water, or lint, which obstructs air flow.