Air King Model 9600 Window Fan Senses room temperature and turns off and on automatically. Features - 3 speed, 1/6 HP, 120V, 1 phasae, permanently lubricated, permanent split capacitor Front mounted rotary switch Impact resistant plastic housing, blade, and grill Window size required - 25-3/4" to 40" x 19" H Specifications- CFM 2470-HIGH 1700-MED 1480-LOW RPM 1480-HIGH 1110-MED 810 -LOW AMPS .80 -HIGH .63 -MED .50 -LOW WATTS 90 -HIGH 76 -MED 61 -LOW dBA 64 -HIGH 50 -MED 47 -LOW PLEASE NOTE THE SHIPPING AND RETURN POLICIES NEAR THE BOTTOM OF OUR HOME PAGE. THANK YOU!