Fire‑Retardant Filter Roll for Metro & High‑Speed Rail HVAC System

Technical Parameters 

Main Material:

Polyester fiber (PET)

Flammability Rating:

S4(DIN 5510-2)

Filtration Class:

G3、G4 (EN779)

Smoking Class:

SR2 (DIN 5510-2)

Filter Object:

Coarse dust and foreign matter≥5μm

Flame Drip Level:

ST2 (DIN 5510-2)

Final Resistance:

250Pa (Suggestion)

Oxygen index:

≥32 (TB/T3237)

Average Weight Efficiency:

≥85%、95%

(ASHRAE52.1-1992)

Smoke Density:

≤200 (TB/T3237)

Temperature Resistance:

≤100℃

Instantaneous Temp Resistance:

≤120℃

Humidity Resistance:

≤100%RH

Specification：

Model

Normal Size

Rated air velocity

 (m/s)

I.N.P

(Pa)

Initial air flow

(m²/h)

 L

(m)

W

(m)

 T

(mm)

FRS-FR-RT-1605

50

2

5.5±1.5

2.5

≤40

7200

FRS-FR-RT-2210

50

2

11±2

Note: Other specifications can be customized according to demand