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Bard part number 5021-1207 is an OEM insulation kit identified by the factory as Insulation W/X42-S0010, used inside Bard wall-mount HVAC cabinets to help control heat transfer, reduce cabinet vibration noise, and protect nearby components from temperature extremes during normal operation. When original insulation is missing, oil-soaked, water-damaged, or deteriorated, replacing it with the correct Bard insulation set helps the unit maintain intended airflow and sound characteristics while keeping service clearances and component protection consistent with the original design. Because insulation placement varies by model and vintage, confirm the exact location and quantity in your Bard parts manual by model and serial number before ordering and installing.
* Orders less than $50 may incure a minimum order fee.