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The Goodman M0570808 button plug is an OEM-quality snap-in closure engineered for the Amana AMES960805CUAA gas furnace and compatible Goodman/Amana cabinets. It seals unused knockout holes, wiring pass-throughs, and accessory ports so conditioned air, dust, insects, and rodents stay out of the burner and blower compartments. A properly plugged cabinet also protects the furnace's rated combustion airflow, helping the unit hold its AFUE efficiency and pass inspection.
This is the factory-specified Goodman part, molded to the exact cabinet knockout diameter for a tight, rattle-free seal. Generic universal plugs often sit loose or fall out under blower vibration, leaving gaps that leak air and admit pests. Choosing OEM guarantees a flush, permanent fit and preserves your furnace warranty.
Rating: Very Easy (1/5). No tools required — simply align the plug with the open knockout and press until it snaps flush. A typical replacement takes under a minute. Always switch off power at the disconnect before opening any furnace panel.