AirPura 2-inch Super HEPA Filter with Titanium dioxide coating is original OEM AirPura replacement filter.
AirPura 2-inch Super HEPA filter with Titanium Dioxide coating fits AirPura P614 Plus.
Titanium dioxide coating (TiO2) plays an important role in Photocatalytic Oxidation process.
The internal surface of Super HEPA filter is sprayed with Titanium dioxide (TiO2) coating.
This renders three times the Photocatalytic capacity and gives a significant boost to the Photocatalytic oxidation process.  
AirPura 2-inch Super HEPA filter features top and bottom metal caps.
The metal caps eliminate the toxic off-gassing and improve the filter rigidity to ensure higher filtration efficiency.
2-inch Super HEPA filter contains 40 sq. ft. of certified Super HEPA filter media.
The guaranteed filtration efficiency is over 99.99% for all microscopic airborne contaminants down to 0.3 micron in size.
Super HEPA filter's lifetime: 2 to 5 years (under normal residential conditions).