Pre-filter cotton

·Washable and reusable

·Low initial resistance

·Large dust holding capacity

·Flexible                 

·Economical and practical

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 **5 times
EN**9 class: G3

Average arrestance:*8%（ASHRAE*2.*****2）
EUROVENT4/5 class: EU3
DIN****8 Non-flammability Standard: F1

Final resistance: (suggested) **0Pa***0Pa
Max. Dust holding capacity: **0g/㎡
Temperature resistance: **0℃