Vornado Compatible AQS25/35 Presorb Pre-Filters - 2-Pack (compare to Vornado #MD1-0006) are pre-cut to replace the Presorb pre-filter that comes in Vornado AQS25, AQS35 and AQS35C air purifiers. Activated charcoal pre-filter reduces odors and captures larger airborne particles before they reach the HEPA filter. Change pre-filter every 3 months, depending on use. Package contains two (2) Charcoal Pre-Filters.
Click here to view the Owner's Manual for Vornado air purifier models AQS25, AQS35 and AQS35C.