Replacement Filter for the Austin Air Bedroom Machine (Model 402)
Features a 5-stage filtration system designed for overall protection against airborne particles, gases, and odors.

Stages of Filtration:

Stage 1
Large Particle Pre-Filter removes visible particles such as dust, hair, and pet dander.
Stage 2
Medium Particle Pre-Filter removes small to medium-sized particles like mold spores and pollen.
Stage 3
Activated Carbon and Zeolite (over 780 cubic inches) removes chemicals, gases, and odors from smoke and household sources.
Stage 4
60 sq. ft. of True Medical-Grade HEPA removes 99.97% of particles larger than 0.3 microns and 95% of particles larger than 0.1 microns, including bacteria, viruses, and allergens.
Stage 5
Military-Grade HEGA Carbon Cloth provides a large surface area for the adsorption of chemicals, gases, viruses, and bacteria.