Domestic fans 
Industrial and commercial fans 
Single-room ventilation systems with heat recovery 
Air handling units 
Air heating systems 
Smoke extraction and ventilation 
Accessories for ventilating systems 
Electrical accessories 
Ventilation ducts and fittings 
Air distribution components 
Ventilation kits and vents Round duct with antibacterial and antistatic treatment
- Description
- Modifications
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Description
Description
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| Nominal air duct diameter | DN 63 | DN 75 | DN 90 | |||||||
| Air speed through the cross-section [m/s] | 2 | 2.5 | 3 | 2 | 2.5 | 3 | 2 | 2.5 | 3 | |
| 1 duct – air flow [m³/h] | 15 | 18 | 22 | 22 | 28 | 34 | 36 | 42 | 50 | |
| 2 ducts – air flow [m³/h] | 29 | 37 | 44 | 45 | 56 | 67 | 70 | 84 | 101 | |
| 3 ducts – air flow [m³/h] | 44 | 55 | 66 | – | – | – | – | – | – | |
| Duct resistance [Pa] | ||||||||||
| Duct length [m] | 2 | 4.2 | 5.5 | 7.5 | 2.3 | 3.5 | 5.0 | 3.2 | 4.4 | 6.2 |
| 4 | 8.4 | 11.0 | 14.9 | 4.6 | 7.0 | 10.0 | 6.4 | 8.7 | 12.3 | |
| 6 | 12.7 | 16.5 | 22.4 | 6.9 | 10.6 | 15.0 | 9.6 | 13.1 | 18.5 | |
| 8 | 16.9 | 22.0 | 29.8 | 9.3 | 14.1 | 20.0 | 12.8 | 17.4 | 24.7 | |
| 10 | 21.1 | 27.5 | 37.3 | 11.6 | 17.6 | 24.9 | 16.0 | 21.8 | 30.9 | |
| 12 | 25.3 | 33.0 | 44.8 | 13.9 | 21.1 | 29.9 | 19.2 | 26.1 | 37.0 | |
| 14 | 29.5 | 38.5 | 52.2 | 16.2 | 24.7 | 34.9 | 22.4 | 30.5 | 43.2 | |
| 16 | 33.8 | 44.0 | 59.7 | 18.5 | 28.2 | 39.9 | 25.6 | 34.8 | 49.4 | |
| 18 | 38.0 | 49.5 | 67.1 | 20.8 | 31.7 | 44.9 | 28.8 | 39.2 | 55.6 | |
Modifications
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