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The Goodman 0128F00006 Chimney Transition Bottom is a genuine OEM venting component engineered for the Goodman VMS80804BNAA 80% AFUE gas furnace and compatible VMS-series models. This transition piece channels combustion byproducts from the furnace collector box into the vent connector, ensuring a proper, code-compliant flue path. A correct transition seal is essential for safe operation and to prevent flue gas spillage.
This is a factory Goodman part built to exact dimensional tolerances, so the vent transition mates precisely to the collector box and vent pipe with no gaps. Generic or fabricated substitutes often require modification and can leak flue gas or fail inspection. For safety-critical venting, OEM is strongly recommended.
Moderate. Requires shutting off gas and power, removing the vent connector, and resealing. Best performed by a qualified HVAC technician. Always verify draft and check for spillage after installation.
Backed by genuine Goodman quality. If you are unsure of fitment, confirm your furnace model number before ordering.