preventing unsafe operating conditions

Always verify the part number against the unit's data plate before installation

ensuring original calibration is maintained

The low-pressure side features an adjustable range of 6" Hg to 108 psig with an automatic reset

It is engineered to provide a direct replacement for KIT21A-601 and PLT52A-600R

Carrier 321975-201 Filter Retainer Rod L99H008 preventing unsafe operating conditionsThe Carrier 321975 201 Filter Retainer Rod is a critical genuine OEM replacement part engineered to maintain the structural integrity of the filtration system in high efficiency Carrier HVAC units. As a veteran grade HVAC filter support, this rod is designed to apply precise tension across the media, preventing filter bypass and ensuring that all return air passes through the filtration interface. Properly secured 321975 201 retainer rods are