16” commercial wall fan， wall mounted ventilation fan is an energy efficient fan with innovative design. This oscillating fan offers 90 degree oscillation to comfortably distribute air throughout the room. It also has an adjustable tilt function that allows you to easily direct the airflow and lock it into place for targeted cooling where you need it. The 3 fan speeds give the option of how cool you want the fan to blow. The fan has two pull cords, one for speed and one for oscillation.