The BioGS HEPA filtration system is a breakthrough technology engineered and developed by Mitsubishi Heavy Industries. Ranked highest in areas of quality and efficiency, Rabbit Air is a new generation air purifier that elimates all the weaknesses of conventional HEPA air purifier. The BioGS HEPA Filter made of the most advanced Bio-Engineer fiber material not only traps but also destroys the allergens such as pet epithelia, dust mite and pollen which accumulate on the filter.