This Fasco D140 universal 115V motor will replace most any obsolete Duo-therm gas furnace blower motor with horsepower of 1/15 or less. If your motor is a 1/50 or 1/40 or 1/25hp or anything less than 1/15, this motor will work if the diameter is 4.5" or 5" and the shaft size is 3/8". Not recommended for applications requiring 1/6, 1/4 or 1/3 motors.
Motor housing measures 5" diameter x 2.5" deep. Shaft measures 3/8" x 2". Four mounting bolts spaced 2.75" apart, or can be mounted using a band (not included).
1 speed with 2 black wires (no plug on end), 1050RPM, 115V, 2.7A, rotates counter clockwise when viewing from back of motor (CCWLE).
Some of the Duotherm models this motor replaces: H-4399, 3-4139 & 3-4123. Probably many others, as well as some motors in other older brands. If unsure, call us with the specs of your old motor.
For a similar 2-speed motor with a 3/8" shaft, look at motor # 40096.