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The Goodman 0128F00006 Chimney Transition (Bottom) is a genuine OEM venting component for the Amana/Goodman AMEH800805CNAA gas furnace. This sheet-metal transition piece connects the furnace flue collar to the vent/chimney system, channeling combustion byproducts safely out of the equipment. A properly fitted transition ensures correct draft and prevents flue-gas leakage into the living space.
This OEM transition is stamped to match the exact flue collar dimensions and bolt pattern of your furnace, so it seats cleanly with no gaps. Fabricated or generic substitutes often require trimming and additional sealing, increasing the risk of flue-gas leaks. For a safe, leak-free vent connection, the factory part is the right choice.
Moderate (3/5). Requires removing the existing vent connection, fitting the transition, and sealing with high-temp foil tape or approved sealant per code. Because this is a combustion-venting component, a licensed HVAC technician should verify draft and check for spillage after installation.