| Lineup Vents TwinFresh Comfo RA1-50 V.3 | Air flow in ventilation mode, m³/h | Air flow in heat recovery mode, m³/h | Sound pressure level LpA at 3 m, dB(A) | Heat recovery efficiency, max, % | Humidity sensor | Maximum wall thickness, mm |
|---|---|---|---|---|---|---|
| 50 | 25 | 23 | 88 | Built-in | 425 | |
| 50 | 25 | 23 | 88 | Built-in | 300 | |
| 50 | 25 | 23 | 88 | Built-in | 425 | |
| 50 | 25 | 23 | 88 | Built-in | 440 | |
| 50 | 25 | 23 | 88 | Built-in | 425 | |
| 50 | 25 | 23 | 88 | Built-in | 425 | |
| 50 | 25 | 23 | 88 | Built-in | 425 |