This easy-to-replace combination filter for the Austin Air HealthMate HM400 includes a HEPA filter, a prefilter, and a carbon/zeolite mixture.
The prefilter is outside of the HEPA filter to protect the unit and extend the life of the main filter.
The HEPA filter is constructed of 60 sq. ft. of true HEPA medical-grade material.
Contains approximately 13 lbs. of solid activated carbon and zeolite, which absorbs many gases and odors.