STANDARD SKELETON AXIAL FAN, FAN SHAPE SKELETON, MOUNTING EYE O.C. 4 1/8 IN, HEIGHT 4 7/16 IN, DEPTH 1 1/2 IN, WIDTH 4 7/16 IN, CFM @ 0.000-IN. SP 105/80 CFM, WATTS 19/20 W, VOLTAGE 230V AC, 60/50 HZ HZ, 0.11/0.125 A AMPS, ELECTRICAL CONNECTION - FANS LEAD WIRES, SOUND LEVEL 47/41, IP RATING IP20, MOUNTING POSITION VERTICAL OR HORIZONTAL, BEARING TYPE BALL, 2900/2550 RPM RPM, MOTOR DESIGN SHADED POLE, MOTOR INSULATION CLASS A, THERMAL PROTECTION