| Unit of measurement | OV 4D 550 | |
| Connected air duct size | mm | 550 |
| Minimum supply voltage | V | 400 |
| Maximum supply voltage | V | 400 |
| Power supply frequency | Hz | 50/60 |
| Rated power | W | 750 |
| Unit current | A | 1.5 |
| Maximum airflow | m3/h | 9700 |
| Sound pressure level LpA at 3 m | dB(A) | 64 |
| Weight | kg | 16.5 |
| Transported air temperature (max) | °С | 60 |
| Transported air temperature (min) | °С | -30 |
| Ingress protection rating | - | IP24 |
| Trademark | Vents |
| Model | OV 4D 550 |
| Type of drive installed | External MSD or VSD |
| Type of heat recovery system | None |
| Nominal flow rate (m3/s) | 1.778 |
| Nominal external pressure (Pa) | 140 |
| Maximum external leakage rates (%) | 2.7 |
| Static efficiency (%) | 38.7 |
| Declared typology | NRVU UVU |
| Effective electric power input (kW) | 0.656 |
| Sound power level (dB(A)) | 93 |
| ∅D | ∅d | B | B1 | L |
|---|---|---|---|---|
| 570 | 11 | 725 | 675 | 260 |
