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Bard part number S552-197 is an OEM blower door assembly used on select Bard wall mounted packaged HVAC units to close off the blower compartment and help maintain proper airflow through the blower section for dependable heating and cooling performance. A correctly fitting blower access door is important for serviceability and for keeping the blower area properly sealed so the unit can move the right volume of air across the coil and through the ductwork. If your existing door is bent, corroded, or no longer sealing correctly, replacing it with the genuine Bard S552-197 blower door assembly helps restore factory fit and reliable operation; confirm compatibility by matching your unit model and serial information to the Bard parts listing before ordering.