 
         
        | Main material | Polyester fiber(PET) | 
| Filtration class | G2、G3、G4 (EN779) | 
| Filter object | ≥5μm coarse dust and foreign matter | 
| Final resistance | 250Pa (Suggestion) | 
| Average weight efficiency | 95%(ASHRAE52.1-1992) | 
| Flammability rating | F1 (DIN 53438)、B1 (GB/T 17591-2006) | 
| Dust holding capacity | 400g/m2 、500g/m2 、600g/m2 | 
| Temperature resistance | 100℃ | 
| Temp. short peak | 120℃ | 
| Humidity resistance | 100% | 
| Model | Filtration class | Standard sizes | Weight (g/m2) | Initial resistance (Pa) | Rated air velocity (m/s) | Rated air flow (m3/h) | 
| RT-CL180 | G4 | 2m*20m*15mm | 180 | 22 | 1.5 | 5400 | 
| RT-CL220 | G4 | 2m*20m*20mm | 220 | 28 | 1.5 | 5400 | 
| Note: other specification can be customized according to requirements. | ||||||