Profile: MDI Spray Systems is a manufacturer of spray booths for the automotive & industrial finishing industry. We also provide mechanical installations, electrical, fire sprinkler systems, and turnkey projects. The 1000 series is a semi-down draft. It is designed to draw air entering the booth cabin from the upper levels of the booth. Then it is filtered down through the ceiling filters into the paint booth, and moves the air to the back of the spray booth. Finally it is filtered through the exhaust system. Our paint mixing room booths are an efficient & economical solution for spray booth needs. Air is drawn through the filter plenum located in the ceiling, downward through the work area, and into the exhaust chamber located at the other side of the room. The filtered air is then discharged through the exhaust stack.