The 60 mm model of the Deep Silence has 12 volts and rotates at 2,000 revolutions per minute. The Deep Silence 60 mm generates an air flow of 15.8 CFM at a noise level of 12.1 dBA. Using the 7-volt cable reduces the speed to approx. 1200 rpm, which generates and air flow of 9.7 CFM at 6.2 dBA.
www.nanoxiausa.com