AC Infinity AXIAL 9238, Muffin Fan, 120V AC 92mm 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. 92 x 92 x 38 mm (3.6 x 3.6 x 1.5 in.) | 100 to 125V AC | Airflow: 47 CFM | Noise: 40 dBA | Speed: 2600 RPM