This IonPure filter by EcoAir is designed for the DD128 Desiccant Dehumidifier. The IonPure technology utilizes soluble glass attached to a Silver Nano Filter, which releases silver ions. To prolong the life of the filter and the machine, vacuum the filter every two weeks. Do not wash the DD128 filter; cleaning should only be done with a vacuum cleaner. The filter is recommended to be replaced after one year, though this may vary depending on usage and environmental conditions.