Nutone 99080273 Broan S90,HS90, MS90 Vent Fan Motor, 1500 rpm, 0.56 Amp, 120V, 60Hz 3.3 inch diameter motor; 2 prong plug Shaft 3/8" x 1 1/4"; rotation CCW shaft end Motor length less shaft 4 3/8 inch 4 mounting studs on back 1 year manufacture warranty Nutone 99080484 BROAN-NUTONE Fan Motor For L250 Ventilator