Say goodbye to stale air and freshen your entire house with the AirKing 9166D window air circulator fan. The AirKing 9166D is a 20 inch whole house ventilation fan, ideal for locations where permanent attic mounted ventilating fans cannot be installed. The unit features a 3-speed permanent split capacitor motor, and three-wing impact resistant fan blades. The AirKing 9166D highly rated for safety and is so easy to install. The fan can be mounted outside of window trim for shallow sill applications. A 6-ft. 18/3-conductor cord with molded plug is uncluded. The AirKing 9166D has dimensions of : 26 1/2"H x26 5/8"W x11 1/4"D