The DD128 IonPure Filter features with antimicrobial efficiency. We recommend that the DD128 IonPure Filter should be replaced every 6 months, depending on usage and the environment and cleaned every 2 weeks. Simply brush off the excess dust with a soft brush or a gentle vacuum will suffice, do not wash or rinse the filter. Compatible Models DD128 Blue, DD128 Green, DD128 Grey, DD128 Red Specification Silver Filter IonPure YES Applicable Models DD128 Blue, DD128 Green, DD128 Grey, DD128 Red Dimension mm Color Light Green Note: Due to our policy of innovation some specifications may be changed without notification.