These type of painting booths are specially designed for heavy and voluminous components which are difficult to handle; like tractors, chassis of vehicles, trailers, earth moving machineries, wagons etc. The fresh air flow; in such painting booth is from top to bottom. The water tank is placed underground; it can be either alkali-proof RCC of fabricated out of MS plates. Depending on the size of the component, the painting booth can be single sided or the double sided. Which means; there shall be single or double extraction chamber, on either or both sides of the component. The fresh air, coming from top of the painting booth takes away the over spray paint particles through metallic grill towards the water tank for further water wash process. The water treatment being same as that in the side draft spray painting booth.The heavy and large components are placed centrally in the spray painting area; either on the floor or material handling trolleys, the operator can move around all the sides of the component. Therby, the whole surface of the component can be painted without any further material handling or rotating of the component.