... : aluminum alloy or stainless steel Media: Synthetic fiberEN779 class: F5,F6,F7,F8,F9Temp. Resistance:100 degree CelsiusHumidity: 100%Speciality: Galvanized ... for choice: 35%,45%,65%,85%and 95%F6 Medium efficiency anti-static pocket filter F6 Medium efficiency anti-static air filter