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Rotom FM-RFM890 Replacement

The Rotom FM-RFM890 is a 1/25 HP flue exhaust venter motor for Lennox GCS3 rooftop units (motor only, no housing). Specs verified against Rotom catalogs.

What the Rotom FM-RFM890 replaces

OEM part numberEquipment
Lennox 98G8901Lennox GCS3 rooftop
Fasco 7121-7091Fasco equivalent

Verified specifications

Horsepower1/25 HP
Voltage208/230V
Amps0.70A
Speed3200 RPM, 1 speed
RotationCW (shaft end)
BearingBall
Shaft2.3" x 5/16", stud mount
TypeShaded-pole flue exhaust motor, open

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