Get in there with the new Felder AF 25 30 and 35 Raw Air Dust Extractors! 
These are super powerful and at a great price point from a European Manufacturer! 
AF25: 5000m3/h 250mm port
Mobile raw air extraction and
 filter station AF25
 3x400V 50Hz 4 kW (5.5 HP)
 with filter bags (dust class L)
 extraction port 250 mm
 2416 x 804 x 2210 mm
 max. volume: 5000 m³/h
 Nominal volume at 20m/s: 3534 m³/h
 Negative pressure at 20m/s: 2263 Pa
 Filter area: 13.23 m² (27 filters)
 Emission sound pressure level in dB: 77
 Chip bags: 2x200 
AF30: 8000m3/h with 300mm port
Mobile raw air extraction and
 filter station AF30
 3x400V 50Hz 5.5 kW (7.35 HP)
 with filter bags (dust class L)
 extraction port 300 mm
 2415 x 1325 x 2240 mm
 max. volume: 8000 m³/h
 Nominal volume at 20m/s: 5089 m³/h
 Negative pressure at 20m/s: 2850 Pa
 Filter area: 22.05 m² (45 units)
 Emission sound pressure level in dB: 78
 Chip bags: 2x200 l
AF35: 10000m3/h with 350mm port
 Mobile raw air extraction and
 filter station AF35
 3x400V 50Hz 11 kW (15 HP)
 with filter bags (dust class L)
 extraction port 350 mm
 3175 x 1410 x 2250 mm
 max. volume: 10000 m³/h
 Nominal volume at 20m/s: 6927 m³/h
 Negative pressure at 20m/s: 2378 Pa
 Filter area: 31.36 m² (64 filters)
 Emission sound pressure level in dB: 80
 Chip bags: 3x200 l