1.Effective fan with a very large diameter
2.High air performance with low energy consumption
3.Shutter opens by means of air flow and stays open thanks to counterweights,minimal air resistance
4.Motor without cooling fan , very lowmaintenance
5.Stable construction with high-grade, coated andcorrosion resistant parts
6.Proven reliability, high efficiency and applicable in the most extreme circumstances
| PERFORMANCES | ||||||||
| Model | Dia.Blade | No.s Blade | Power | Air Flow m³/h | Out Size/mm | |||
| 0 Pa | 25pa | 50pa | ||||||
| QOMA/NB-1380 | 1280mm | 3 | 1.1kw | 41000 | 36400 | 30500 | 1380x1380x437 | |
