1 mmwg (millimeters water gauge) is equal to approximately 0.001422 bar.
mmWG is a pressure unit. its something like mm Hg, however in mmWG, W refers to water and G refers to gauge pressure. Hence, mm WG refers to the gauge pressure in terms of milimeters of water.
A fan is a device that moves air using blades and creates a breeze, while a blower is a device that produces a larger volume of air at a higher velocity. Blowers are typically more powerful and used for industrial applications, while fans are used for cooling and ventilation in homes and offices.