Chieftec AF-0925S is a case fan that moves air through a computer case to support system cooling. It is intended for installation inside the case as part of its cooling arrangement.
Its 90 × 90 × 25 mm dimensions and 1800 rpm speed are the manufacturer's listed specifications. The 3-pin / Molex connection distinguishes this model from PWM versions in the same family. Use it for case ventilation when the stated dimensions and connection suit your system.