| Model No. | AFI HD 02 | AFI HD 03 | AFI HD 04 |
| Classification (EN779) | G2 | G3 | G4 |
| Avg. Efficiency | 80% | 85% | 90% |
| Down particle size | 20 Micron | 15 Micron | 10 Micron |
| Initial pressure drop | 30 Pa | 40 Pa | 50 Pa |
| Final pressure drop | 150 Pa | 200 Pa | 250 Pa |
| MERV Parameter | 2-4 | 5 | 6-7 |