Dayton - QMark Fan Motor For Dayton Unit Heater 1550 RPM 208-240 # 3900-2008-000 .18 Amp, 208-240 Volts, 60/50 Hz 6 Watts; 1550 RPM Shaft 1/4" x 3/8" (threaded); Rotation CW Lead End Unit Bearing Motor replaces Square Motor 1 Year Manufacture Warranty