This replacement filter for Austin Air Allergy Machine is constructed of a military grade carbon cloth and a medical grade HEPA filter to remove the smallest airborne particles and chemical gas contaminants.

All standard size units are interchangeable with all standard size filters. So. if you purchased a standard size HealthMate and would like to upgrade to the Allergy Machine. simply purchase a replacement Allergy Machine filter.

Filter Specifications

• STAGE 1 Large Particle Pre-filter. Removes particles easily seen by the 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 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 4 Military Grade HEGA Carbon Cloth. HEGA (High Efficiency Gas Arrestance). providing an extremely large surface area for adsorption of chemicals. gases. viruses and bacteria.

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