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Bard 7004-074 is a 20 x 25 x 2 MERV 11 replacement air filter designed for select Bard wall-mounted HVAC units to help maintain proper airflow while capturing finer airborne particulates common in commercial environments. Using the correct OEM filter size and rating supports consistent system performance, helps protect the evaporator coil from loading up with dust, and can reduce nuisance service issues tied to restricted return air. Replace the filter on a routine schedule based on operating conditions, and confirm the nominal dimensions and MERV requirement against your Bard unit model and service manual before ordering.