Century formerly AO Smith GF2054 1/2 hp, 1725 RPM, 115 volts, 48/56 Frame, ODP, Sleeve Bearing Belt Drive Blower Motor Century SVB2054 1/2-1/6 HP, 1725/1140 RPM, 56Z Frame, CCWLE Rotation, 1/2-Perfect Steerable Transfer Carth by 1-5/8-Perfect Steerable Transfer Carth Flat Shaft Evaporative Cooler Motor