... flange assemble mounting make the fan firm Axial flow fanWe are a professional axial flow fan manufacturer,featured by small vibration ,stable ... operation ,lower noise and high quality.Our anxial flow fan are widely used of electric equipment,medical ,computer,electric welder, ... ) :2650/3100Air flow (m3/min):2.3/2.7Noise dB(A) :47/49Insulation Resistance :AC1500V-100MĪ©Resist Strength :1500V/minWeight ...