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The Goodman M0570808 is a genuine OEM button plug (hole cap) for the VMES961005CNAA gas furnace. It seals unused knockouts and access holes in the furnace cabinet, keeping the combustion and blower compartments closed against air leaks, dust, and pests. Missing plugs reduce cabinet integrity and can alter airflow and combustion draft.
The genuine Goodman OEM plug matches the factory knockout diameter for a flush, secure snap fit. Generic plugs can be loose or oversized, leaving gaps that let in air and debris.
Very Easy (1/5). A no-tool snap-in replacement. Power down the furnace and press the plug into the open hole until it clicks. Typical time: under 2 minutes. Always shut off power before servicing.