| Unit of measurement | OVK 4E 250 | |
| Connected air duct size | mm | 250 |
| Minimum supply voltage | V | 220 |
| Maximum supply voltage | V | 240 |
| Power supply frequency | Hz | 50/60 |
| Rated power | W | 50 |
| Unit current | A | 0.22 |
| Maximum airflow | m3/h | 800 |
| Sound pressure level LpA at 3 m | dB(A) | 38 |
| Weight | kg | 3.4 |
| Transported air temperature (max) | °С | 60 |
| Transported air temperature (min) | °С | -30 |
| Ingress protection rating | - | IP24 |
| Trademark | Vents |
| Model | OVK 4E 250 |
| Type of drive installed | External MSD or VSD |
| Type of heat recovery system | None |
| Nominal flow rate (m3/s) | 0.085 |
| Nominal external pressure (Pa) | 55 |
| Maximum external leakage rates (%) | 2.7 |
| Static efficiency (%) | 8.7 |
| Sound power level (dB(A)) | 75 |
| Effective electric power input (kW) | 0.055 |
| Declared typology | NRVU UVU |
| ∅D | ∅D1 | ∅D2 | ∅d | L |
|---|---|---|---|---|
| 260 | 318 | 340 | 7 | 135 |
