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The Goodman 0128F00006 Chimney Transition Bottom is a genuine OEM venting component engineered for the ACVC80805CXCA 80% AFUE gas furnace. This transition piece directs combustion byproducts from the heat exchanger into the flue/vent system, maintaining the correct draft path and proper clearances for safe, code-compliant operation.
This is a factory OEM part with exact dimensions and mounting holes that match the original furnace cabinet. Generic or universal venting transitions often require trimming or shimming and can compromise draft and flue clearances. For a safe, leak-free seal we recommend the OEM component.
Moderate. Requires partial furnace disassembly and sheet-metal handling. Always shut off gas and power before service and verify proper draft after installation. Professional installation recommended.