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542-054 OBSOLETE
- Fresh Air BOP Assembly
Bard part number 542-054 is a Fresh Air BOP Assembly used on select Bard wall-mounted HVAC units to support controlled outdoor air intake for ventilation. If your existing fresh air/bypass opening components are damaged, missing, or not sealing or moving correctly, replacing the complete 542-054 assembly helps restore proper airflow management and keeps the unit operating as designed. As an OEM Bard replacement part, it is built to match original fit and function, but you should confirm compatibility by checking your unit model and serial number against the Bard parts list before ordering.
Official replacement(s):
542-054BX
- Fresh Air BOP Assembly - Boxed