RCI ActiveOx Cell is an essential part of Fresh Air purifier to eliminate smoke, odors, and reduce airborne contaminants. 
  
The RCI Cell should be replaced when UV Light Bulb is burned, or every year whichever comes first.

This cell is with ozone, but we have ozone free cells on our website here: ecoquestpurifiers.com/shop/parts/rci_pco_cell_for_freshair_ozone_free6036/