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The Goodman 0128F00006 Chimney Transition Bottom is a genuine OEM flue venting component engineered for the AMH80803BNBD 80% AFUE gas furnace. This transition piece routes combustion byproducts from the heat exchanger collector into the vent system, forming a sealed, code-compliant path to the chimney or vent connector. Using the factory-specified part preserves proper draft and prevents flue gas leakage.
The OEM 0128F00006 is stamped to the exact dimensions and flange pattern of the AMH80803BNBD vent assembly, ensuring a leak-free seal without field modification. Generic or fabricated substitutes often require cutting, drilling, or extra sealant and can compromise draft performance. For a safety-critical venting part, we recommend the OEM component.
Moderate. Requires access to the flue collector area, correct gasketing/sealant, and verification of draft after reassembly. Always shut off gas and power before servicing and confirm proper venting per local code. Professional installation is recommended for combustion venting work.