Features. Helps remove 99.97 of particles as small as 0.3 microns from passing through the filter.. Captures unpleasant odors and common allergens.. Maintains consistent high performance over time.. Replacing the HEPA filter at least once a year is recommended.Specification. Global Product Type - Air Purifier Filters-HEPA. Filter Type - HEPA. Filtration For - Dust. Width - 10 in.. Depth - 2 in.. Height - 6 12 in.