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The Bard 8603-043BX I series Smart Actuator (boxed) is an OEM control component used to position and regulate a factory ventilation or airflow device within compatible Bard wall-mount and packaged systems, helping the unit respond correctly to control signals for proper outside air management and stable comfort. Because actuator styles and wiring connections can vary by model and option package, match this part number to the unit model and serial information or the correct Bard parts list before ordering to ensure proper fit and operation.
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.