The Austin Air HealthMate Filter is the best overall protection filter from the Austin Air Filter family. The Austin Air HealthMate HM400 Filteris constructed using a true medical High Efficiency Particulate Arresting (HEPA) filter surrounded by a carbon/zeolite mixture capable of removing the tiniest of particles and absorbing odors and gases. The Austin Air HealthMate HM400 Filter uses the HEPA to remove up to 99.97 percent of all particles down to 0.3 microns in size and 95 percent down to .1 micron.Filter Replacement Instructions-pdfChosen
by the American Red Cross and the Federal Emergency Management Agency
(FEMA) to address severe air quality concerns in post 9/11 New York.