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The Goodman M0570808 Button Plug is a genuine OEM snap-in plug used to seal unused knockouts and access holes on the AMES920403ANAA gas furnace cabinet. Sealing these openings maintains proper airflow, prevents air leakage that hurts efficiency, and keeps out dust, insects, and debris.
The OEM M0570808 is sized to Goodman's exact knockout diameter for a secure, flush snap fit. Generic plugs frequently sit loose or pop out, defeating the seal. For a reliable, permanent fit, choose the OEM part.
Easy (1/5) — No tools required. Press the plug into the open hole until it snaps flush. Disconnect power before opening any furnace panel.