Model: rdm1225b Size: 120 * 120 * 25MM Bearing: oil bearing Voltage: DC12V Current: 0.23a Speed: 3500rpm Air volume: 35.16cfm Noise: 15.3dba Maintain the best continuous operation time of 180000 hours Interface: mainboard 2-wire interface Features: maintenance free double ball bearing, long service life, with sufficient cooling air volume and air pressure.