Austin Air's Powerful 4-Stage Filtration

1. An outer filter traps the largest airborne particles, lint and pet hair.

2. The Permafilt™ pre-filter traps smaller particles which have passed through the outer filter, but are still large enough to catch in a non-HEPA filter. These outside layers make your carbon and HEPA filters last much longer, by protecting them from larger particles. So, your expensive filters last longer and you save money.

3. A powerful 15 lbs. of activated carbon/zeolite adsorbs odors, gases, and harmful toxins.

4. Last but not least, the true medical HEPA filter paper removes airborne particles and allergens, trapping an impressive 99.97% of all particles down to 0.3 microns.

4-Stage Filtration Plus Some -- This Superblend filter is specially designed for the chemically sensitive, removing higher levels of gases and toxins

1. An outer filter traps the largest air particles, lint and pet hair

2. The Permafilt™ pre-filter traps smaller particles which have passed through the outer filter, but are still large enough to catch in a non-HEPA filter. These outside layers make your carbon and HEPA filters last much longer, by protecting them from larger particles. So, your expensive filters last longer and you save money.

3. The 15 lbs of activated carbon/zeolite has been specially treated with potassium iodide, enhancing the adsorption of thousands of odors and gases, including VOC's.

4. The true medical HEPA filter paper removes 99.97% of all airborne particles and allergens as small as 0.3 microns.

Technology Developed by the Military - Military Grade Carbon Cloth for removal of odors and gases

1. An outer filter traps the largest airborne particles.

2. The Permafilt™ pre-filter traps large particles like dirt, lint, and hair.

3. Strategically placed military carbon cloth absorbs smaller airborne particles and contaminants, gases and odors. HEGA stands for High Efficiency Gas Adsorption.

4. The true medical HEPA filter paper removes harmful airborne particles as small as 0.3 microns.