115V AC Cooltron High Speed Fan * Case Size: 121 x 121 x 37 mm ( 4.8 x 4.8 x 1.5 in ) * Airflow: 23 CFM | Noise: 54 dBA | Speed: 2500 RPM | Power: 19 W | Bearings: Dual Ball * High Airflow: This model is designed to maximize airflow and can be too loud for some applications. * Larger models with a higher speed are also available, links can be found in the product description.