115V AC Cooltron High Speed Fan * Case Size: Ø254 x 89 mm ( Ø10 x 1.5 in ) * Airflow: 525 CFM | Noise: 53 dBA | Speed: 1700 RPM | Power: 40 W | Bearings: Dual Ball * High Airflow: This model is designed to maximize airflow and can be too loud for some applications. * Smaller models are available for compact applications, links can be found in the product description.