The immediate containment, 5 gallon H13 HEPA (high efficiency particulate air) filter 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 5 gallon bucket filter is resealable and disposable. This filter can capture large volumes of hazardous particulate, dry chemical, lead paint, silica dust, engineered stone dust, bed bugs, cockroaches, rodent droppings, bat guano and much more.