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The Goodman 0128F00006 is a genuine OEM chimney transition bottom for DMP150-52AB gas furnaces. This sheet-metal transition channels combustion byproducts from the furnace collar into the vent connector, ensuring proper draft and a sealed, safe flue path. A corroded or ill-fitting transition can leak flue gases and disrupt venting, so an exact-fit OEM piece matters for safety.
The genuine Goodman OEM transition matches the furnace flue collar exactly, so gaskets and screw holes line up for a leak-free seal. Universal or hand-fabricated substitutes risk gaps that compromise draft and allow flue-gas spillage. For venting components, OEM fit is strongly recommended.
Moderate (2/5). Power down and let the furnace cool, remove the vent connector and mounting screws, swap the transition, and reseal joints per code. Budget 20–30 minutes. Always confirm proper draft and check for spillage at the draft hood after installation.