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Bard 553-540-1BX is an OEM ERV vent option door assembly used on select Bard wall mount HVAC units equipped for an energy recovery ventilator opening, helping close off and protect the ERV vent option area so airflow is properly directed and the cabinet remains sealed during operation. This is an EXTERIOR CABINET COMPONENT finished in White textured enamel to match factory units, making it a solid choice when a damaged or missing door is causing air leakage, water intrusion risk, or a poor cabinet seal. Ensure this matches the color of your Bard unit for seamless replacement. Exterior panels with enamel cabinet paint coating have been tested to withstand over 1000 hours of salt spray tests per ASTM B117-03. This listing is for the panel only. Reuse your existing fasteners, clips, and hardware.
Bard uses suffixes like "BX" to manage parts internally. These do not change the physical form or function of the part.
A part number ending in "BX" simply means it is packaged in a box for shipping, rather than for internal assembly use.
Example: 8406-142BX is physically identical to 8406-142.