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The Goodman 0128F00006 Chimney Transition Bottom is a genuine OEM venting component for the Amana/Goodman AMEC800804CNAB gas furnace. This sheet-metal transition forms the bottom section of the flue/chimney connection, channeling combustion byproducts from the heat exchanger into the vent system with a correct, leak-resistant fit.
Flue transitions are dimension-critical — the OEM 0128F00006 is stamped to seat precisely against the furnace collar and vent pipe. A generic or field-fabricated piece risks gaps that allow flue-gas leakage. Because this part handles combustion exhaust, the exact OEM fit is the safe choice.
Easy to Moderate. With power and gas off, remove the old transition fasteners, seat the new bottom, and secure with sheet-metal screws and approved sealant. Typically 15–20 minutes. Verify proper draft after installation, or have a technician confirm venting integrity.