A spray booth is rigid, has a customizable shape, and has bolted construction. The structure is self-supporting and will not need any supporting foundation except for fixing bolts. It is fabricated out of 18 swg M.S. sheet panels bolted with structural steel for rigidity. The Side Draft Paint Spray Booth is suitable for conventional, airless, and electrostatic spray painting and consists of a painting chamber, an inlet air filter, paint trap filters, an axial flow fan, an electric motor, a duct and canopy, etc. The intake air into the paint booth is filtered by an intake filter to avoid foreign particle deposition on the painted surface. The intake air is sucked into the room by the extraction modules located on the floor.