Supco FCR6 Fin Comb Ring 30067439-890 When the internal plenum temperature

When the internal plenum temperature exceeds the safety threshold

By ensuring consistent furnace blower assembly dimensions

allowing it to function reliably in gravity-fed or low-pressure systems

it eliminates the risk of flooded starts and the subsequent oil dilution that leads to bearing washout

Supco FCR6 Fin Comb Ring 30067439-890 When the internal plenum temperatureThe Supco FCR6 Fin Comb Ring is a high precision maintenance tool essential for any technician tasked with restoring airflow and improving thermal exchange on distorted heat transfer surfaces. This kit is the direct replacement for 6614 and features six color coded combs constructed from durable PA66 nylon. Designed to straighten evaporator and condenser coils, the FCR6 covers twelve distinct fins per inch (FPI) configurations, ranging from 8 to 20