30 years old. Never used. McLean part number "4B1212P". The impeller is about 12-1/2 inch diameter and four inches wide at the edge. Center sticks out a little more.

Motor is Emerson K55HXRDT-5477, 1650 RPM, 1/8 horsepower, 115 volts AC.

The unit is meant to mount by the motor with a 2-1/2 inch square 4 bolt pattern.