size: dia.60*420 mm bearing system: Ball/Sleeve bearing voltage: 220V freq: 50/60HZ airflow: 6.0/6.0 m3/min current: 0.17/0.2A power: 26/44W speed: 2400/2400 r.p.m pressure: 6.3/7.8 mmAq noise: 56dB-A weight: 1785g