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The Goodman 0128F00006 Chimney Transition Bottom is a genuine OEM flue-vent component for the Goodman ADSH801005CXAA gas furnace. This factory-formed sheet-metal transition connects the furnace's induced-draft outlet to the chimney or vent connector, channeling combustion byproducts safely out of the appliance. Its precise geometry maintains proper draft and a leak-resistant seam at the base of the flue path.
Venting components must match the furnace outlet dimensions exactly to preserve draft and prevent flue-gas spillage. The OEM 0128F00006 is stamped to the original pattern for a direct, gap-free fit. Generic transitions rarely match the flange pattern and can compromise the venting seal — a combustion-safety concern.
Moderate (3/5). Requires removing the existing vent connector, transferring or resealing joints, and verifying proper draft afterward. Because this is a combustion-vent part, we recommend a qualified HVAC technician confirm the flue is sealed and drafting correctly on completion.