AC Infinity AXIAL 1238, Muffin Fan, 115V 120V AC 120mm x 38mm High Speed, for DIY Cooling Ventilation Exhaust Projects Designed for projects that requires cooling or ventilation; or as a replacement fan for various products. Includes a heavy-duty aluminum fan with power plug cord, two fan guards, and mounting screw set. Dual-ball bearings have a lifespan of 67,000 hours and allows the fans to be laid flat or stand upright. High Speed: This model is designed to maximize airflow and can be too loud for some applications. Dimensions: 120 x 120 x 38 mm | Airflow: 110 CFM | Noise: 47 dBA | Bearings: Dual Ball