115V AC Cooltron High Speed Fan * Case Size: 172 x 150 x 55 mm ( 6.8 x 6 x 2.2 in ) * Airflow: 298 CFM | Noise: 60 dBA | Speed: 3300 RPM | Power: 50 W | Bearings: Dual Ball * High Airflow: This model is designed to maximize airflow and can be too loud for some applications. * Available in 38mm and 51mm thickness for more compact applications, links can be found in the product description.