Reznor 17909 Fan Blade 326070-701 or audible humming from the

or audible humming from the internal solenoids indicating an electrical failure in the coils

also identified by the industry interchange X9117B7B

25-12 thread size

Direct OEM Match: Specifically engineered as the direct replacement for EF33CB271 and EF33CB273 to maintain system integrity

As a genuine Source 1 OEM replacement part

Reznor 17909 Fan Blade 326070-701 or audible humming from theThe Reznor 17909 Fan Blade is a direct replacement component engineered specifically for Reznor F and B series unit heaters. This 16 inch, 4 blade aluminum fan assembly is designed with a 23 degree pitch and a 1 2 inch bore for precise fitment on Model F165 and Model F200 gas fired equipment. To maintain optimal airflow and static pressure, the blades are precision balanced to minimize vibration and prevent premature motor bearing fatigue. When