GREE High Static Pressure Big Duct Types series offers a big capacity solution to big commercial areas. Built with a 300 Pa 3phase belt drive indoor unit, it can offer a circulation of up to 7.000 m/h allowing long duct installations and durable capacity in cooling and heating. The units incorporate R410a Scroll compressors originating from international brand manufacturers, along with Gree designed full electronic control and protection systems, like phase reverse protector, high and low pressure sensors, defrost and a self diagnosis system.