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Bard part number 121Y216BX is an OEM left-hand blower partition used inside the blower section of select Bard wall-mount HVAC units to separate compartments and guide airflow where it needs to go. In the field, a bent or missing partition can lead to air bypass, noise, and uneven airflow across the blower and coil area, so replacing it helps restore proper air separation and consistent system performance. This internal sheet metal component is made to fit the factory blower housing geometry, which is important when you are servicing Bard equipment that relies on tight internal clearances for correct air delivery. This listing is for the blower partition only, packaged as boxed from the manufacturer, and you should confirm left-hand orientation and unit model compatibility 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.