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The genuine Goodman M0570808 button plug is a factory OEM snap-in hole plug for the AMVC960603BNAA modulating gas furnace and other compatible Goodman/Amana units. It closes off unused knockout and access holes in the furnace cabinet and blower compartment, maintaining proper airflow sealing and preventing air, dust, and pest intrusion. Missing plugs allow return-air leakage that can reduce efficiency and cause combustion-air imbalance.
The OEM Goodman plug is sized to the exact factory knockout diameter, so it snaps in flush and stays seated. Generic universal plugs often fit loosely or pop out over time; the OEM part ensures a tight, permanent seal.
Easy (1/5) — press-fit into the cabinet hole by hand, no tools required. De-energize the furnace before servicing.