Supco SM672 Motor Kit 2 Speed Universal C Frame 240V 
Includes Fan Blades & Mounting Hardware Kit, hub adapter, 1/4" & 5/16" shaft adapter
Replaces Most C Frame & 3-1/2" Round Motors with these specifications 
Use with Exhaust Fans, Range Hoods, Reach & Walk in Cooler & Freezer Evaporators, Ventilator Fans, Electric Unit Heaters, Forced Air Heaters.