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The Goodman 0128F00006 Chimney Transition Bottom is a genuine OEM venting component engineered for the AMVC801005CNAB variable-speed gas furnace and other compatible Goodman/Amana 80% AFUE models. It forms the lower connection between the furnace flue collector and the chimney/vent transition, maintaining a proper seal for safe combustion-gas evacuation.
The genuine OEM 0128F00006 is stamped to the exact dimensions and gauge specified by Goodman, ensuring a leak-free flue seal and correct draft. Generic or fabricated substitutes often vary in flange geometry, which can cause vent leaks, draft problems, and safety-code failures. For a venting part that carries combustion gases, OEM fitment is strongly recommended.
Moderate. Requires shutting off gas and power, accessing the vent/collector area, and reconnecting the transition with proper sealing. Best performed by a licensed HVAC technician; a combustion/draft check should follow any venting work.