 
         
        | Main components | Flame retardant polyester fiber(PET) | 
| Filtration class | F5、F6(EN779) | 
| Filter object | ≥1μmCoarse dust and foreign matter | 
| Average weighting efficiency | 98%(ASHRAE52.1-1992) | 
| Smoke density | ≤200(TB/3237) | 
| Oxygen index | ≥32(TB/3237) | 
| Flammable level | S2 (DIN5510-2) | 
| Drop grade | ST2 (DIN5510-2) | 
| Smoke level | SR2 (DIN5510-2) | 
| Temperature resistance | ≤100℃ | 
| Temp. Short peak | 120℃ | 
| Humidity resistance | ≤100% | 
| Model | Filtration class | Average capture rate | Thickness (mm) | Weight | Dust holding capacity | Rated air velocity (m/s) | I.N.P (Pa) | F.N.P (Pa) | Viscosity | 
| RT-NF600G | M6 | 99% | 22±2 | 600 | 600 | 0.25 | 45 | 450 | Full glue | 
| RT-NF500G | M5 | 98% | 22±2 | 500 | 500 | 0.25 | 40 | 400 | Full glue | 
| RT-NF450G | M5 | 97% | 22±2 | 450 | 450 | 0.25 | 35 | 400 | Surface glue | 
| RT-NF420G | M5 | 95% | 22±2 | 420 | 420 | 0.25 | 30 | 400 | Surface glue | 
| Note: other specifications can be customized according to requirements. | |||||||||