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The Bard 131-170BX Filter Slide (boxed) is an OEM service part used in Bard wall-mounted HVAC equipment to support and position the air filter so it stays properly seated as air moves through the unit. A worn or bent filter slide can let the filter shift, which may lead to bypass air, increased dust in the cabinet, and reduced airflow across the coil. Replacing the filter slide with the correct Bard 131-170BX helps restore the intended filter fit and makes routine filter changes smoother during scheduled maintenance. Verify your unit model and the filter rack configuration to confirm this slide matches your application before ordering.
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.