Dimension of outer the frame is 30mm(L) x 30mm(W) x 10mm(H) / The size of fan in inch is 1.18in(L) x 1.18in(W) x 0.39in(H); The center to center distance beween the mountiong holes is 24±0.3mm/0.94in.
Operating Voltage Range:4.5V to 5V. (overtake to 5V, it can also work. but not safe, and seriously affects lifespan of fan.); Start up voltage is 3.5V.
Rated Voltage: DC 5V; Rated Current: 0.2Amp; Rated Speed: 9000 RPM; Air flow: 3.79CFM; Noise: 21.4dBA
Connector: Dupont; Lead wire: UL Type (+): Red wire ; (-): Black wire. This is a two wire cooling fan; Bearing Type: Sleeve Bearing ; Life: working up to 35000h at 25 degrees.
Package include: 1 x 30mm cooling fan; 4*M2.5x16mm screws & nuts( the fan is mounted by screws.)