Air volume: 5.37 / 6.88 (M3 / min) Noise: 57/62 (dB-A) Insulation: Class B insulation enameled wire, temperature of 120 degrees Celsius; Insulation resistance: 500 megohms minimum; Withstanding Voltage: leakage current 0.5mA withstand voltage 1500V / 1 min; Package Size: 15cm x 15cm x 5cm (6 inch x 6 inch;)