Product model: 3612KL-04W-B66 Appearance size: 92 92 32mm Center hole distance: 83X83MM Speed reference: 4000 10% Bearing type: double ball bearing Service life: 50,000 hours Noise Reference: 44 decibels Rated voltage: 12V Air volume reference: 70.5CFM Speed measurement function: support PWM function: support Interface type: 4P interface, etc. For other interfaces, please contact us.