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The Goodman M0570808 is an OEM snap-in button plug for the AMVC960803BNAA 96% AFUE variable-speed modulating gas furnace. This plug fills an unused knockout or access hole in the furnace cabinet, blower deck, or control area, sealing it against air leakage and debris. Keeping cabinet openings properly plugged preserves the furnace's designed airflow path and prevents conditioned-air bypass around the blower.
The genuine Goodman plug matches the exact knockout diameter for a flush, retained snap fit. Generic plugs often loosen or fail to seal the opening, allowing air bypass and dust intrusion. The OEM part restores the factory-sealed cabinet.
Very Easy (1/5) — Push the plug into the hole until it snaps flush. No tools or electrical work. Under 2 minutes.