In these booths, filtration is done by water. The water curtain in the booth catches the first paint particulates coming out of the gun and lowers them to the pool. However, overspray which floats in the air and does not touch the water curtain move towards the exhaust fan, the spray nozzles and separators here capture these particulates, by that way paint particulates are not thrown from the chimney. At the same time, a suitable and clean environment provided in the booth in terms of employee health and workplace safety.