Reznor 38678 Orifice this collar shaft kit provides

this collar shaft kit provides a durable solution for restoring precise airflow control and linkage alignment in older commercial air handling units

For veteran technicians and mechanical contractors maintaining residential heating systems

field-tested component designed for precise interface with T42

or water stains around the vent exit points in condensing units

Reznor 38678 Orifice this collar shaft kit providesThe Reznor 38678 #45 Nat Gas Orifice is a high precision combustion component designed for accurate fuel delivery in specific gas fired HVAC heating equipment. As an OEM replacement orifice, it ensures the correct natural gas flow rate to the burner, which is critical for maintaining optimal combustion efficiency and consistent BTU output. This #45 drill size orifice is engineered to meet the exact tolerances required for Reznor unit heaters and duct