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Bard 509-223BX - Lower Back Assembly

Bard 509-223BX is an OEM Lower Back Assembly supplied boxed for service replacement on Bard wall-mounted HVAC equipment. This cabinet structural component restores the lower rear section of the unit so the chassis stays properly supported and aligned, helping panels, coils, and internal assemblies sit correctly after corrosion damage or impact. Replacing the lower back assembly with a genuine Bard part is a practical way to maintain original fit-up and service clearances, and it is especially important on older units where cabinet distortion can create vibration, rattles, or air leakage. Confirm model and serial compatibility with your Bard parts breakdown before ordering to ensure the correct revision for your unit.


  • Technical Specifications
  • Product number: 509-223BX
  • Manufacturer description: Lower Back Assembly - Boxed
  • HTS Code: "8415.90.8085"

$258.00

What does the "BX" suffix mean?

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.