Performance: Frame: aluminum frame, aluminum frame, galvanized frame, stainless steel frame filter: ultra-fine glass fiber filter media separated: Foil Efficiency: F6 (EN779) ,60-80% ASHRAE 52/76 F7 ( EN779) ,80-90% ASHRAE 52/76 F8 (EN779) ,90-95% ASHRAE 52/76 Fire Rating: UL-2 (UL900) Recommended final pressure drop: 450Pa Environment: Maximum temperature: ≤ 70 ℃ Maximum humidity : ≤ 100% RH Application: clean room, ventilation and air conditioning systems for commercial and industrial ventilation and air conditioning system, main filter with high humidity tight installation space requirements of high fire ventilation and air conditioning system or ventilation and humidity higher ventilation and air conditioning systems