Make yearly AeraMax SE filter changes quick and easy with the AeraMax SE Combo Filter. The AeraMax SE Combo Filter is comprised of three filters your AeraMax SE needs to maintain H13 HEPA filter (H13 HEPA, Carbon Filter and Pre-filter). The filter captures up to 99.95% of particles as small as 0.1 microns including allergens, pollen, dust, pet dander and smoke. While maintaining the performance of your AeraMax SE investment. Designed for long-lasting performance and unmatched quality, each filter set is rated for a full year of effective protection. To ensure your AeraMax SE is providing the most powerful air purification possible, it is essential to keep up with recommended filter changes.