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The Bard 553-528BX Filter Access Door Assembly is an OEM replacement door designed to restore proper access to the return air filter compartment on compatible Bard wall mounted HVAC units. A secure, properly fitting filter door helps keep the filter seated, supports consistent airflow through the evaporator section, and makes routine filter changes faster for service techs and maintenance staff. This Bard factory part is a direct fit replacement for damaged, bent, or missing access doors, helping protect internal components from unfiltered bypass air and keeping your unit serviceable with the correct OEM hardware and alignment.
Bard uses suffixes like "BX" to manage parts internally. These do not change the physical form or function of the part.
A part number ending in "BX" simply means it is packaged in a box for shipping, rather than for internal assembly use.
Example: 8406-142BX is physically identical to 8406-142.