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Bard part 509-494BX is an OEM upper back panel assembly that mounts at the top rear of select Bard wall-mounted packaged units, helping restore the cabinet structure and proper alignment at the back of the unit after damage, corrosion, or service work. Because this is a factory Bard replacement, it is built to match the original fit so the back of the cabinet closes up correctly and supports adjoining panels and openings as designed. If your unit’s model and serial call for 509-494BX, replacing the upper back section is a straightforward way to bring the cabinet back to spec and keep the unit sealed and supported for normal operation. This part is commonly supplied boxed for protection during shipping and handling.
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.