This EC axial fan consume very less power & better efficiency than AC equivalent. EC motors are around 30% more efficient than AC motors. Designed for projects that requires cooling or ventilation; or as a replacement fan for various products. Dual-ball bearings have a lifespan of 50,000 hours and allows the fans to be laid flat or stand upright.Package include: 1 Piece fan and mounting screws & nuts; 2* leadwiresabout 38 inches); 1* Power Plug Warranty: One-year quality assurance. Please contact us If the product has any quality problems, it will be refunded within 90 days and replaced within one year. 120 x 120 x 32 mm ( 4.72 x 4.72 x 1.26 in. ) Rated Voltage:110V 115V 120V 220V 240V Airflow: 24.6 ±10%CFM Power: 4W Speed: 2200 RPM Air Pressure (In H2O): 0.81