Perfect for projects cooling or ventilation; or as a replacement fan for various products such as thermoelectric cooler, wine fridge, RV converter, HD enclosure, solar inverter, desktop, etc. Includes a 80mm brushless dc cooling fan, one 80mm metal protective grill, and mounting screw set; one year warranty Operating Voltage Range: 14 to 26V (if overtake 26V, it also can work. but not safe and seriously affects lifespan of fan.); Sleeve bearing have a lifespan of 35,000 hours Connector: XH2.54-2Pin; This is a two wire cooling fan; Red wire: (+) ; Black wire: (-); Cable Length: 250mm (9.84 in.) 80 x 80 x 20 mm (3.15 x3.15 x 0.79 in.) Hole Pitch: 71.5 mm (2.8 in.) Rated Voltage: 24V Power: 2W Airflow: 35.4 CFM Static Pressure: 0.17In H2O Noise: 26.8dBA Speed: 2800 RPM