GDSTIME 80mm x 80mm x 25mm 12V High Speed Dual Ball Bearing Brushless DC Cooling Fan for Desktop

Dimension of outer the frame is 80mm(L) x 80mm(W) x 25mm(H) / The size of fan in inch is 3.15in(L) x 3.15in(W) x 1in(H); The center to center distance beween the mountiong holes is 71.5mm/2.81in.
Operating Voltage Range5.5V to 13.8V. (overtake to 13.8V, it can also work. but not safe, and seriously affects lifespan of fan.); Start up voltage is 3.9V.
Rated Current: 0.35Amp; Speed: 4500RPM ; Air flow: 59CFM ; Noise: 43dBA
Connector: XH2.54-2Pin; Lead wire: UL Type (positve): Red wire ; (negative): Black wire. This is a two wire cooling fan; Bearing Type: Dual Ball Bearings ; Life: working up to 50000h at 25 degrees.
Package include: 1 x 80mm cooling fan; 1x 80mm metal grill; 4pcs M4x35mm screws and nuts( The metal grill is separate with fan and it is mounted by screws)