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Bard part 139-181 is an OEM damper blade used in Bard wall mount HVAC equipment to open and close the damper section for proper control of outdoor air and return air flow. A straight, intact blade is critical for stable ventilation operation since binding, bent edges, or wear at the pivot points can cause poor damper movement, nuisance faults, or unwanted air leakage that impacts comfort and efficiency. This replacement is intended to restore correct damper travel and sealing when paired with the existing linkage and blade seals per your unit parts breakdown, and it is best matched by confirming the unit model and serial so the blade size and mounting style align with your specific Bard configuration.
* Orders less than $50 may incure a minimum order fee.