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The Bard 553-540-XBX is an OEM vent option door assembly designed for Bard wall mounted packaged units equipped with an ERV (energy recovery ventilator). This exterior cabinet component helps close and seal the ERV vent opening so the ventilation package fits and operates as intended, supporting proper airflow control and weather protection when the ERV option is installed. Finished in Beige textured enamel to match factory units. 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.