For a more economical alternative for this Hunter 30900 HEPAtech Purifier Filter try the Hunter 30900.
The Hunter 30900 HEPAtech Purifier Filter is an electrostatically-charged filter that captures 99.9% of particles as small as 0.1 microns. It fits the HEPAtech 300-30300 and 302-30302 air filters.
The Hunter 30900 should be replaced every six months. This is a genuine OEM Hunter part.