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Bard 139-438BX - Actuator Arm
Bard 139-438BX is a genuine OEM stainless steel actuator arm used in Bard wall mount units to transfer motion from a damper actuator to the intake or exhaust damper linkage, helping the economizer and ventilation damper assemblies open and close smoothly and consistently. This boxed replacement arm is a common service item when damper operation is loose, binding, or out of calibration, and replacing it with the correct Bard part helps restore proper airflow control and dependable damper positioning. Confirm fit by matching the part number to your Bard service parts manual and verify linkage style before ordering since similar Bard actuator arm numbers can appear on the same damper assembly diagrams.
- Technical Specifications
- Product number: 139-438BX
- Manufacturer description: Actuator Arm - SS - Boxed
- HTS Code: "8415.90.8085"
$74.00
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.