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The Goodman M0570808 Button Plug is a genuine OEM snap-in plug used to seal unused knockouts and access holes in the cabinet of the Goodman ACEC960603BNAA. It closes off openings left by wiring, conduit, or factory knockouts so conditioned air doesn't leak and pests/debris stay out of the cabinet. Though small, a proper plug helps maintain the sealed cabinet integrity the furnace relies on for correct airflow and combustion air balance.
OEM vs. Generic: The OEM button plug matches the exact knockout diameter for a flush, secure snap fit. Generic plugs may be loose or oversized, popping out or leaving gaps. For a clean, sealed cabinet, the factory plug is the right fit.
Install Difficulty: Very Easy (1/5). Simply press the plug into the open hole until it snaps flush. No tools, no power-down beyond standard safety — under 2 minutes.