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The Goodman M0570808 Button Plug is a genuine OEM snap-in closure designed to seal unused knockouts and access holes in the sheet-metal cabinet of your furnace. It is a factory-correct fit for the Amana/Goodman AMEC960403ANAB gas furnace and shares the same platform across many 96% AFUE models. A properly sealed cabinet maintains the manufacturer's intended airflow and combustion-air path, preventing conditioned-air leakage and keeping debris out of the burner and control compartments.
Our genuine OEM M0570808 is molded to the exact knockout diameter used on your furnace, so it snaps in flush and stays seated under vibration. Universal aftermarket plugs are often loosely sized and can pop free over time, leaving an air leak. For a $3 part, OEM fit is the smart choice.
Very Easy (1/5). No tools required — align the plug with the open knockout and press until it snaps into place. Always shut off power and gas before opening any furnace panel.