Radial blowers with three to five stages for vacuum and pressure operation. Capacities from 3.2 to 8.9 m³/min (111.8 to 314.1 cfm) and vacuum up to 115 mbar. Compact design, low temperature even when throttled. Fast start-up due to lightweight impellers. Motors comply with DIN EN 60034 and have IP 54 protection and insulation class F.