Genuine HEPA 13 filter replacement for the Habitat 150A(e) air purifier. Captures 99.97 per cent of airborne particles measuring .03 micrometers in diameter. Effectively captures common everyday pollutants such as pollen, dust, mold, pet dander, and smoke. Longest lasting filters on the market. Cleans and captures for up to 8 months before needing to be replaced.