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.

Filter Specifications

• 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) Color: gray, blue or green
• 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.

You can check the size of your existing filter by looking for a label on the underside. Model HM400 indicates standard size filter.