DFRA series 
Desiccant rotor air dehumidifiers
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DFRA desiccant rotor air dehumidifiers remove moisture from the air and control humidity in both commercial and industrial applications. They work by means of a high performance silica gel desiccant rotor that attracts and retains water vapour easily and effectively. In this way, when air loaded with vapour or humid particles enters the wheel, the desiccant material filters it, retaining all the humidity and expelling it again as dry air.