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The Goodman 0128F00006 is a genuine OEM chimney transition bottom (flue/vent transition) for the AMVC800805CNAA and compatible Goodman/Amana furnaces. This sheet-metal component adapts the furnace draft hood or inducer outlet to the vent connector, channeling combustion byproducts into the chimney with the correct geometry for reliable draft. A rusted, warped, or mismatched transition can leak flue gases and disrupt venting.
Vent transitions must match the furnace outlet dimensions and pitch exactly to maintain draft and seal against flue-gas leakage. The OEM 0128F00006 drops in with factory bolt patterns and clearances. A generic or hand-fabricated piece risks gaps, poor draft, and carbon monoxide spillage. OEM is recommended for any combustion-venting part.
Moderate (2/5). Disconnect power, detach the existing transition, and secure the replacement with OEM fasteners and approved sealant/tape where specified. Confirm proper draft and perform a spillage/CO check after installation. Professional service recommended for venting work.