OverviewThe high speed 172 by 150 by 38 millimeter 115V AC axial fan is housed in die cast aluminum with thermoplastic blades. Containing long life dual ball bearings, the fan can run continuously for 67,000 hours and be mounted in any direction. Has terminal connectors and can be plugged into a standard outlet with a fan power cord, sold separately. Cooltron fans are certified by CE, UL, TUV, and RoHS; and found in various Samsung and Eaton servers and UPS systems. High SpeedThe majority of fans larger than 120mm are designed to have a very high airflow. They are loud and not recommended for applications where noise is a factor. This model has a capacitor which greatly increases its speed and airflow. ApplicationsThis model can be found in noise tolerant applications such as server racks, LED signs, industrial machinery, commercial ventilation, and more.PDF Specification Sheethttp://www.acfdserver.com/products/FA1738B11T7C-31/2012-2013%20COOLTRON%20E-Catalog_146.pdf Other AC Infinity products to consider (Airflow CFM, Noise dBA): Copy and paste links to view115V AC Cooling Fan 172mm x 150mm x 51mm High Speed (297 CFM, 60 dBA): http://www.amazon.com/gp/product/B007U01VMO115V AC Cooling Fan 172mm x 150mm x 55mm High Speed (298 CFM, 60 dBA): http://www.amazon.com/gp/product/B006FCXYBY115V AC Cooling Fan Ø250mm x 89mm High Speed (429 CFM, 59 dBA): http://www.amazon.com/gp/product/B005F9WSYC