What is a Sealed HEPA filtration system?
Sealed HEPA Filtration is a totally sealed vacuum filtration system. A Sealed HEPA Filtration system filters everything, including the motor exhaust, so only clean air comes out of your vacuum. Every vacuum with this feature is individually sealed for Sealed HEPA performance, and filters household dust, pollen, bacteria and other allergens as small as 0.3 microns. (A human hair is 50–70 microns thick.