An ultra-quiet UL-certified blower system designed for cooling cabinets that requires minimal noise. Low-profile aluminium frame is ideal where mounting space is limited or a smaller footprint is desired. Features a multi-speed controller to set the fans speed to optimal noise and airflow levels. Powered by wall outlet or USB port, included Turbo Adapter increases performance by 25%. Dimensions: 5.8 x 2.0 x 4.7 in Airflow: 35 CFM Noise: 17 dBA Bearings: Dual Ball