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The Goodman 0128F00006 chimney transition bottom is an OEM flue/vent component for the Amana/Goodman WFM18070S3AXCB gas furnace. This transition piece connects the furnace's induced-draft outlet or vent collar to the chimney/flue pipe, forming a sealed, correctly sized pathway that carries combustion byproducts safely out of the home. A warped, rusted, or ill-fitting transition can allow flue-gas leakage, condensation damage, or draft problems.
The OEM 0128F00006 is stamped to the exact dimensions and collar diameter of this furnace's vent system, ensuring a leak-free, code-compliant fit. Generic or hand-fabricated transitions often require modification and may not seal properly against the flue — a combustion-safety concern. OEM guarantees a factory-correct venting connection.
Moderate (3/5). Requires disconnecting the existing vent connection, fitting the transition, and re-sealing with approved fasteners and high-temp sealant to a leak-free standard — about 30–45 minutes. A combustion/draft check afterward is recommended; professional installation is advised for venting work.