This vent a hood replacement blower motor spins at 1550 RPM's and bolts to your hood with a standard 3 screw configuration. The manufacturers part number is P1302-1. This blower is designed to spin counterclockwise and sits on the left hand side of a dual blower set up on a wall mount hood. adapter to make it cross compatible with older vent a hoods. This motor carries a 5 year warranty from the manufacturer.