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Bard part number 139-399 is an OEM actuator arm used in Bard wall mount equipment damper assemblies to transfer motion from the damper actuator to the linkage so the intake or exhaust damper can open and close smoothly. When this arm is worn, bent, or stripped, you can see sticking dampers, poor ventilation control, or inconsistent economizer performance. Replacing the 139-399 actuator arm helps restore proper damper travel and reliable operation while maintaining correct factory fit with the related brackets, ball joints, and actuator components used on many Bard MEGA-TEC wall-mounted units.
* Orders less than $50 may incure a minimum order fee.