Light, heavy air flow, low noise, strength, low pressure, good anti-temperature centigrade and long life span Our motor ... diameter is φ60mm φ48mm φ40mm φ30mmvoltage:12V,24V motor protection low noise and long life expectancyThe material of the cross flow ... have the advantages as following: Light, heavy air flow, low noise, strength, low pressure, good anti-temperature centigrade and long life span. The ...