Filter material is white or blue-white pre-filter media, G2 / G3
Aluminum/Galvanized frame, normal thickness: 46mm / 96mm
Skeleton: Galvanized steel, two layers skeletons.
Low resistance, large air flow and wide filtering area, long service life
Application: Mainly used to absorb above 5um particles, widely applied to HVAC system and ventilation system as primary or medium filtration.