This specific model is optimized for systems using spark ignition

If the unit was operated during construction or in a high-dust environment

As a critical component in many furnace ignition systems

Always verify your existing blower wheel rotation before mounting

Does this sensor require specialized tools for installation

Nordyne 297211R Assembly 318423-701 This specific model is optimizedFor service calls involving compromised airflow or vibratory noise in Nordyne built systems, the Nordyne 297211R Replacement Blower Housing Assembly is the specified OEM solution for restoring factory standard CFM output. This 9 10x7 blower housing is engineered to maintain precise internal clearances for 9. 1 inch diameter wheels with a 7 inch width, ensuring optimal static pressure across the heat exchanger. As a direct fit HVAC blower assembly, it