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Bard part number 135Y393BX is an OEM left copper chase used on select Bard wall-mount air conditioner cabinet assemblies to shield and guide refrigerant copper tubing where it passes through the unit, helping prevent rub-through and protecting surrounding components during operation and service. It is supplied boxed for safer handling and cleaner storage, and it is designed to match the factory fit so the lineset routing stays properly supported after repair. This listing is for the chase only, so confirm left-hand orientation and verify compatibility by model and serial number before ordering, especially if your unit has been serviced or field-modified.
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.