This is an authentic OEM replacement part sourced directly from LG. This axial fan assembly, also known as a condenser fan, is commonly used in air conditioners. This compact propeller like fan fits on the motor shaft and circulates air over the condenser to help cool off the refrigerant. This fan blows air parallel to the motor shaft that the blade rotates on, which is why it is able to successfully circulate the air over the condenser. This fan is made out of white plastic, and it is sold individually. Make sure you unplug the air conditioner before you start this repair.