The Devilbiss DAD500 Desiccant Dryer system will eliminate moisture and dirt in the air line. The first stage centrifugal filter removes oil, water, and dirt down to 5 microns. The second stage coalesce filter removes oil aerosols and dirt particles down to .01 microns. The third stage uses low dusting desiccant to trap water vapor. This unit has a 25 CFM air capacity. This unit includes the New and Improved premium desiccant by DeVilbiss that has a 51% longer life than some competitive brands. The unit also includes a built in wall mounting bracket.