Product Description Product Dimensions: Total Size: 4.72 x 4.72 x 0.98 in.(120 x 120 x 25 mm) Hole Distance: 4.13 x 4.13 in.(105 x 105 mm) Screw Hole Size: Ø 0.17 in.(Ø 4.3 mm) Fan Connector: XH2.54-2Pin Lead wires: Red ,Black -, 400 mm/15.75 in.length Fan Bearings: Dual Ball Life Expectancy: 50000 hrs Specifications: Waterproof Rateing: IP67 Start-up Voltage: 5.5V Rated Voltage: 12V DC Rated Current: 0.14 Amp Rated Power: 3.5 W Rated Speed: 2500 RPM 10% Fan Air Flow: 93 CFM 10% Noise Level: 38 dBA 10% Air Pressure: 0.16 In H2O Operating Voltage: 7V to 13.5V Operating Temperature: 14-167 F Storage Temperature: -40-176 F Packing Contain: 1x 120mm brushless cooling fan 2x 120mm metal grills 4x Mounting screws & nuts Note: 1.Transition: 1cm 10mm 0.39 in.2.Please allow 0-1cm error due to manual measurement.please make sure you do not mind before you ordering.