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Bard part number 8110-002 is an OEM damper motor used in Bard wall-mount HVAC ventilation and economizer assemblies to drive the damper linkage and position the outdoor air damper for proper airflow control. A weak or failed damper motor can leave the damper stuck open or closed, leading to comfort issues, ventilation problems, or economizer faults, so replacing it with the correct Bard motor helps restore smooth damper movement and reliable operation. Confirm your unit model and ventilation option and match wiring and actuator rotation to your existing setup to ensure proper fit and correct damper direction.