Package include: 1piece fan include fan grill and mounting screws & nuts Dimension: 80mm( L ) x 80mm ( W ) x 15mm( H ) or 3.15''( L ) x 3.15''( W ) x 0.59''( H ) Rated Voltage: DC 24V; Rated Current: 0.1Amp; Rated Speed:3800RPM; Air flow: 32.8CFM; Noise: 27.8dBA Bearing Type: Sleeve Bearing ; Life: working up to 35000h at 25 degrees. Connector: XH2.54-2Pin; Lead wire: UL Type (+): Red wire ; (-): Black wire. This is a two wire cooling fan.