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Bard part number 527-640BX is an OEM lower base assembly supplied boxed, designed as the structural foundation of select Bard wall mounted packaged HVAC units. The lower base supports the cabinet and helps keep major components properly positioned so the unit can be mounted and serviced as intended. If your existing base is bent, rusted through, or damaged from impact, replacing it with the correct Bard OEM base helps restore proper fit-up of cabinet sections and reduces the chance of vibration, panel misalignment, or drain and seal issues caused by a distorted frame. Confirm fit by matching your unit model and serial information to the correct service parts listing 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.