Genuine Advanced HEPA+ Pre-Filter replaces the pre-filter that comes with the Advanced HEPA+ air purifier. Long-life pre-filter traps large-sized particles that can easily be seen with the eye during the first stage of a 4-stage filtration process. In performing this role, the pre-filter helps to prolong the life of the inner filters, especially the HEPA filter. Pre-Filter lasts for years, under normal operating conditions and with regular care. Package contains one (1) Pre-Filter.
Changing the Pre-Filter:
Click here for a one-page set of instructions on filter changes for the Advanced HEPA+ Air Purifier.