These filters work at peak filtration efficiency right out of the box with no need for "seasoning"; capturing 99.97% of particles as small as 0.3 microns in size. Made from high-efficiency G.E. certified H12 HEPA Media (MERV16±) with wide-spaced pleating and non-stick PTFE coating allow for quick and easy dust release. These filters
Independently tested by an accredited 3rd party.