• STAGE 1 Large Particle Pre-filter. Removes particles easily seen by the naked eye (e.g. dust, hair and pet dander)
• STAGE 2 Medium Particle Pre-filter. Removes small to medium size particles (e.g. molds, spores and pollen)
• STAGE 3 Over 780 cubic inches of Activated Carbon, Specially Impregnated Carbon and Zeolite. Removes ammonias, pet odors and dander, chemicals, and gases
• 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.

Replacement filter for the Austin Air Pet Machine. The Austin Air Pet Machine
is designed specifically for customers with pets. As much as we love our
animals, often they can leave unwanted odors that are difficult to get rid of.
The Austin Air Pet Machine will freshen up the air in your home giving you the
chance to enjoy your pets so much more. The Austin Air Pet Machine has also
been selected for clinical trials at the University of Washington, where it is
proving highly effective at removing ammoniums from the air. All standard size
units are interchangeable with all standard size filters.