The immediate containment, one quart H13 HEPA filter (2 pack) is 99.97% efficient at .3 micron and includes three layers of 56 pleat media. The three layers consist of one cellulose layer and two glass layers. The HEPA filter captures everything from hazardous particulate, dry chemical, bed bugs, cockroaches, rodent droppings and much more.
Express HEPA (H13) Filter Cartridge
(99.97% efficient @ .3 micron)