1) Application: High temperature resistance Filter dust, used in the high temperature environment, pre-filter through air filter system. 2) Type: plank metal mesh pre-filter 3) Frame: Galvanized iron, stainless steel or aluminum alloy frame 4) Media: Multi-level structure, can increase the filtering area 5) Protect mesh: Aluminum or stainless steel mesh 6) En799 class: G2 7) Average arrestance: 65%-70% (ASHRAE52.1-1992) 8) EUROVENT4/5 class: EU2 9) DIN53438 Non-flammability Standard : F1 10) Final resistance: (suggest) 100Pa-200Pa 11) Max. air flow : 125% of the rated air flow 12) Temp. Resistance: 300°C