CleanAir 3-Stage Desiccant Air Drying System DeVilbiss' DAD-500 Desiccant Dryer Unit provides the ultimate in clean, dry air to ensure optimal painting finishes and results. Ideally suited for low to medium production shops, the DAD-500 air-drying system includes three filtering units, as well as a wall mount bracket and desiccant filter change indicator. . First Stage: Centrifugal filter removes particulates and contaminants down to 5 microns Second Stage: Coalescer filters particulates and contaminates down to 0.01 micron Third Stage: Desiccant dryer removes remaining water vapor to a dew point of -40 degrees F . 3-Stage Desiccant Dryer Unit - DAD-500 DAD500 Yes - LEAD