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The Bard 921-0121BX Fan Shroud Assembly is an OEM airflow management component used in select Bard wall-mounted HVAC units to properly position and surround the condenser fan, helping the fan pull air evenly through the coil and discharge it as designed. A damaged or missing shroud can cause recirculation, reduced capacity, higher head pressure, and increased fan noise, so replacing it with the correct factory part helps restore stable airflow and normal operating temperatures. Verify compatibility by matching the full part number 921-0121BX to your unit model and serial information before ordering.
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.