ToolBazaar.pk providing you best Quality ISO certified brands like DEWALT, MAKITA, BOSCH, PRESCOTT, INGCO etc. A fan is a powered machine used to create a flow of air. A fan consists of a rotating arrangement of vanes or blades, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor, or runner. Usually, it is contained within some form of housing, or case.