Features and benefits: lowers the dew point to -30 degrees F. Includes 2 Quarts of Desiccant, beads made of silica gel sight glass indicates color change built in after-filter prevents down stream dust the unit is rated for 25 SCFM. This 2 quart Desiccant dryer/filter removes All water vapor by lowering the dew point to -30 degrees F. When the beads change from Blue to pink, it is time to change the beads. The unit includes two Quarts of Desiccant. Made in the USA.