2. Split Air Conditioner Air Vanes (Deflectors) are installed directly on the indoor unit of the split air conditioner and are characterized by: Compatibility: Available in adjustable and customizable sizes to fit all types of wall-mounted air conditioners. Features: They prevent cold air from being directed directly at people and come in transparent designs that do not obstruct the remote signal. Installation: They are easy to hang and install manually without the need for wall drilling. Made in China