初效过滤棉
•可清洗性强
•初阻力低
•阻燃性极佳
•有弹性
•经济实用
用途：主要过滤对象:≥5μm,粗尘过滤，尤其适用于空调、火车、
地铁等空气过滤系统预过滤
类型：过滤垫或过滤卷
滤料：密度逐级加高的合成纤维
可清洗2-3次
EN 779 级别：G2
平均计重效率：75%（ASHRAE52.1-1992）
EUROVENT4/5级别：EU2
DIN 53438 阻燃标准：F1
终阻力：（建议）100Pa-（最大）200Pa
容尘量：430g/㎡
耐温：100℃
FRS-20 Coarse filter cotton
•Washable and reusable
•Low resistance
•Excellent flame retardant
•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: pads or rolls size
Media: synthetic fiber with gradual density,
Washable: about 2-3 times
EN779 class: G2
Average arrestance:75%（ASHRAE52.1-1992）
EUROVENT4/5 class: EU2
DIN53438 Non-flammability Standard: F1
Final resistance: (suggested) 100Pa-(max)200Pa
Max. Dust holding capacity: 430g/㎡
Temperature resistance: 100℃