Pre-filter roll

Application: ≥5μm, Filter dust , (especially used in the train or the

subway, where the place has air-conditioner), pre-filter through air

filter program

Type: supply pads or rolls size

Media: synthetic fiber with gradual density, inlet side is blue.

Washable: about 4-5 times

EN779 class: G3

Average arrestance:88%（ASHRAE52.1-1992）

EUROVENT4/5 class: EU3

DIN53438  Non-flammability Standard: F1

Final resistance:  (suggested) 150Pa-250Pa

Max. Dust holding capacity: 520g/㎡

Temperature resistance: 100℃