Abstract: This invention teaches an air distributor accessory device for a breeze box type fan having an annular case and having fan blades supported to rotate within the confines of this case. The accessory device is designed to fit against and be secured to the front face of the fan case, and itself has an annular frame that pivotally supports a plurality of vanes in generally parallel relation. Each vane has a slender profile, and depending on its orientation relative to the direction of the air flow over it can either allow the air to pass straight through or redirect it in a sideways manner. Cross members pivotally interconnected all of the vanes to maintain them generally parallel to one another, and to move them uniformly. A small motor unit is connected to one of the cross members to oscillate the vanes side to side in unison.