This type of HEPA filter is mainly used in air purification devices such as fresh air systems, fresh air fans, and household air purifiers to filter PM2.5 and PM0.3 dust particles in the air. This product does not have national standard specifications and
| Outer frame | Black cardboard/white cardboard/non-woven fabric/aluminum alloy |
| filter material | Composite meltblown fabric filter paper/carbon cloth/fiberglass filter paper |
| partition | Hot melt adhesive |
| Sealing strip | Foam sealing strip/EVA sealing strip |
| External dimensions | Rated air volume | Dust Holding | face velocity | initial resistance | Suggested final resistance | Filtration efficiency |
| L长*W宽*D高 （mm） | (m³/h) | g/㎡ | m/s | （pa） | （pa） | EN779 |
| 610*610*50 | 470 | 450 | 0.35 | 170 | 400 | H13 |
| 610*610*69 | 600 | 650 | 0.45 | 170 | 400 | H13 |
| 610*610*90 | 800 | 800 | 0.6 | 170 | 400 | H13 |
Remarks: The resistance values are different at different wind speeds. Special dimensions and specifications can be customized according to customer requirements