Replacement filter for the Austin Air Bedroom 402, features 5-stage filtration system for overall particulate protection.

Stages of Filtration:

•  STAGE 1 – Large Particle Pre-filter. Removes particles easily seen by the naked eye 

•  STAGE 2 – Medium Particle Pre-filter. Removes small to medium size particles 

•  STAGE 3 – Over 780 cubic inches of Activated Carbon and Zeolite Removes chemicals, gases and odors

•  STAGE 4 – 60 sq. ft. of True Medical Grade HEPA. Removes 99.97% of all particles larger than 0.3 microns and 95% of all particles larger than 0.1 microns.

•  STAGE 5 – Military Grade HEGA Carbon Cloth. HEGA (High Efficiency Gas Arrestance), providing an extremely large surface area for adsorption of chemicals, gases, viruses and bacteria