Marathon Motors Fan Blower Motor, X021, 48A11O1353, 3/4HP, 1075RPM, 277V, 1PH, 48Y FR, OPAOMarathon's line of Heating, Ventilation, and Air Conditioning Motors are designed with dynamically balanced rotors for reduced vibration and quiet operation. Product Specifications BRANDMarathon Motors MANUFACTURERS PART NUMBERK1500 HORSEPOWER3/4 MOTOR RPM 60Hz1075 VOLTAGE277 PHASE1 FRAME48Y ENCLOSURE TYPEOpen/Drip Proof HERTZ60 SPEEDS3 ROTATIONCW THERMAL PROTECTIONAutomatic (under locked rotor only) RATED RPM1075 MOUNTINGResilient Base - Extended Studs BEARING TYPEBall DRIVE END BEARING SIZE6203 OPPOSITE END BEARING SIZE6203 INSULATION CLASSB SERVICE FACTOR@ 60 Hz AMBIENT TEMP C40 DUTYContinuous AOM is_motorYes WEIGHT LBS20 RPM RANGE1001-1100 OPPOSITE END BEARINGBall FL AMPS5 ASSEMBLYF1 Only ENCLOSUREOPAO